List of tornadoes and tornado outbreaks

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Tornado Events

These are some notable tornadoes, tornado outbreaks, and tornado outbreak sequences that have occurred around the globe.

The listing is U.S.-centric, with more and more consistent information available for U.S. tornadoes. Some North American outbreaks affecting the U.S. may only have U.S. tornado information.
Exact death and injury counts are not possible, especially for large events and events before 1955.
Prior to 1950 in the United States, only significant tornadoes are listed for the number of tornadoes in outbreaks, and for similar reasons injuries are listed for all events only before 1950.
Due to increasing detection, particularly in the U.S., numbers of counted tornadoes have increased markedly in recent decades although number of actual tornadoes and counted significant tornadoes has not. In older events, the number of tornadoes officially counted is likely underestimated.

Pre 1800

Event	Date	Area	Tornadoes	Casualties	Notes
Rosdalla, Ireland Tornado	April 30, 1054	Ireland	-	-	Earliest known European tornado
London Tornado of 1091	October 23, 1091	England	-	-	Earliest known and perhaps strongest British tornado
Valetta, Malta Tornado	September 23, 1551 (or 1556)	Malta	-	≈600 fatalities	Perhaps deadliest European tornado
La Rochelle - Paris, France Tornadoes	September 1669	France	-	-	Longest track tornado family in Europe
Rehobeth, Massachusetts Tornado	August 1671	Massachusetts	-	0 fatalities	Earliest known U.S. tornado
Utrecht, Netherlands Tornado	August 1, 1674	Utrecht, Netherlands	-	-
Cambridge, Massachusetts Tornado	July 8, 1680	Massachusetts	-	1 fatality	Earliest known U.S. killer tornado

Event Date Area Tornadoes Casualties Notes
Fernhill Heath - Hampshire, England Tornadoes September 22, 1810 England - - Widest known and perhaps strongest British tornadoes
Plymouth, UK Tornado December 14, 1810 England - - Perhaps strongest British tornado
War of 1812 Washington D.C. Tornado August 25, 1814 Washington, D.C. - - Killed several British soldiers occupying city
Calcutta, India Tornado April 8, 1838 Calcutta, India - 215 fatalities
Great Natchez Tornado May 7, 1840 Southeastern U.S. >1 >317 fatalities, >109 injuries 2nd deadliest tornado in U.S. history
Seine-Maritime, France Tornado August 19, 1845 France - 70-200 fatalities Perhaps strongest European tornado
Sicily, Italy Tornadoes December 1851 Sicily, Italy - ≈500 fatalities Among deadliest European tornadoes
Mid-Mississippi Valley Tornado Outbreak of June 1860 June 3, 1860 Middle Mississippi Valley - ≥148 fatalities, ≥409 injuries Exceptionally violent outbreak
1871 St. Louis Tornado March 8, 1871 Middle Mississippi Valley ≥1 9 fatalities, 60 injuries Struck St. Louis-East St. Louis
Vienna, Austria Tornado June 29, 1873 Vienna, Austria - Many fatalities
Southeast Tornado Outbreak of March 1875 March 20, 1875 Southeastern U.S. - ≥93 fatalities, ≥367 injuries (7 violent, ≥11 killer)
Southeast Tornado Outbreak of May 1875 May 1, 1875 Southeastern U.S. - 58 fatalities, 195 injuries (1 violent, 7 killer)
Central Plains Tornado Outbreaks of May 1879 May 29 - May 30, 1879 Central Great Plains - ≥36 fatalities, ≥186 injuries (≥15 significant, 6 violent, ≥9 killer)
Buctouche, New Brunswick Tornado August 6, 1879 Buctouche, New Brunswick - 7 fatalities Easternmost violent tornado in North America
Tay Estuary, Scotland Tornado December 28, 1879 Scotland - 79 fatalities Waterspout took out central section of Tay Bridge killing all on board of a passing train
April 1880 Tornado Outbreak April 18, 1880 Mississippi Valley - Great Plains - ≥165 fatalities, ≥511 injuries (>22 significant, 5 violent, 14 killer)
Southeast Tornado Outbreak of April 1883 April 22 - 23, 1883 Southeastern U.S. - ≥109 fatalities, ≥755 injuries (17 signicant, 3 violent, 13 killer)
May 1883 Tornado Outbreak May 18, 1883 Middle-Lower Mississippi Valley - ≥64 fatalities, ≥386 injuries (≥21 significant, 6 violent, 16 killers)
Enigma Tornado Outbreak February 19 - 20, 1884 Central - Eastern U.S. >41 >178 fatalities, ≥1056 injuries Among largest known outbreaks (>37 significant, ≥4 violent, ≥28 killer)
Mississippi Valley Tornado Outbreak of April 1886 April 14, 1886 Middle-Upper Mississippi Valley - 87 fatalities, 319 injuries (4 violent, 6 killer)
1890 St. Louis Tornado Outbreak January 12, 1890 Middle Mississippi Valley - 16 fatalities, 91 injuries (≥1 violent, 3 killer)
Mid-Mississippi Valley Tornado Outbreak of March 1890 March 27, 1890 Middle Mississippi Valley - ≥146 fatalities, ≥847 injuries 76 killed in downtown Louisville, KY (≥24 significant, 6 violent, 16 killer)
Upper Mississippi Valley Tornado Outbreak of September 1894 September 21 - 22, 1894 Upper Mississippi Valley - >63 fatalities, >253 injuries (>9 significant, 4 violent, 5 killer)
Sedgwick, Kansas-Hull, Iowa Tornado Outbreaks of 1895 May 1 - 3, 1895 Central-Northern Great Plains - >18-35 fatalities, >67 injuries 7 killed in schools in Ireton-Hull, IA (2 F5s, 3 killer)
Sherman, Texas Tornado Outbreak May 15, 1896 Southern Great Plains - 85 fatalities, ≥291 injuries
Central Plains Tornado Outbreak of 1896 May 17, 1896 Central Great Plains - 25 fatalities, ≥260 injuries
Late-May 1896 Tornado Outbreak May 24 - 25, 1896 Upper Mississippi Valley - Great Lakes (Ontario) - ≥79 fatalities, >215 injuries
St. Louis-East St. Louis Tornado May 27 - 28, 1896 Missouri - Illinois / Mid-Atlantic - ≥305 fatalities, >1236 injuries By far costliest tornado in history, 3rd deadliest in U.S. history (10 significant, 4 violent, 7 killer (27th))
Arkansas Tornado Outbreak of January 1898 January 11, 1898 Lower Mississippi Valley - ≥56 fatalities, ≥119 injuries (1 violent, 2 killer)
Mississippi Valley Tornado Outbreaks of May 1898 May 17 - 18, 1898 Middle-Upper Mississippi Valley - 55 fatalities, ≥380 injuries (5 violent, 10 killer)
Hondo Coal Mine, Mexico Tornado May 10, 1899 Northern Mexico - ≥22 fatalities Deadliest Mexican tornado
New Richmond, Wisconsin Tornado Outbreak June 11 - 12, 1899 Upper Midwest - ≥124 fatalities, ≥203 injuries (2 violent, 3 killer)

Event	Date	Area	Tornadoes	Casualties	Notes
Fernhill Heath - Hampshire, England Tornadoes	September 22, 1810	England	-	-	Widest known and perhaps strongest British tornadoes
Plymouth, UK Tornado	December 14, 1810	England	-	-	Perhaps strongest British tornado
War of 1812 Washington D.C. Tornado	August 25, 1814	Washington, D.C.	-	-	Killed several British soldiers occupying city
Calcutta, India Tornado	April 8, 1838	Calcutta, India	-	215 fatalities
Great Natchez Tornado	May 7, 1840	Southeastern U.S.	>1	>317 fatalities, >109 injuries	2nd deadliest tornado in U.S. history
Seine-Maritime, France Tornado	August 19, 1845	France	-	70-200 fatalities	Perhaps strongest European tornado
Sicily, Italy Tornadoes	December 1851	Sicily, Italy	-	≈500 fatalities	Among deadliest European tornadoes
Mid-Mississippi Valley Tornado Outbreak of June 1860	June 3, 1860	Middle Mississippi Valley	-	≥148 fatalities, ≥409 injuries	Exceptionally violent outbreak
1871 St. Louis Tornado	March 8, 1871	Middle Mississippi Valley	≥1	9 fatalities, 60 injuries	Struck St. Louis-East St. Louis
Vienna, Austria Tornado	June 29, 1873	Vienna, Austria	-	Many fatalities
Southeast Tornado Outbreak of March 1875	March 20, 1875	Southeastern U.S.	-	≥93 fatalities, ≥367 injuries	(7 violent, ≥11 killer)
Southeast Tornado Outbreak of May 1875	May 1, 1875	Southeastern U.S.	-	58 fatalities, 195 injuries	(1 violent, 7 killer)
Central Plains Tornado Outbreaks of May 1879	May 29 - May 30, 1879	Central Great Plains	-	≥36 fatalities, ≥186 injuries	(≥15 significant, 6 violent, ≥9 killer)
Buctouche, New Brunswick Tornado	August 6, 1879	Buctouche, New Brunswick	-	7 fatalities	Easternmost violent tornado in North America
Tay Estuary, Scotland Tornado	December 28, 1879	Scotland	-	79 fatalities	Waterspout took out central section of Tay Bridge killing all on board of a passing train
April 1880 Tornado Outbreak	April 18, 1880	Mississippi Valley - Great Plains	-	≥165 fatalities, ≥511 injuries	(>22 significant, 5 violent, 14 killer)
Southeast Tornado Outbreak of April 1883	April 22 - 23, 1883	Southeastern U.S.	-	≥109 fatalities, ≥755 injuries	(17 signicant, 3 violent, 13 killer)
May 1883 Tornado Outbreak	May 18, 1883	Middle-Lower Mississippi Valley	-	≥64 fatalities, ≥386 injuries	(≥21 significant, 6 violent, 16 killers)
Enigma Tornado Outbreak	February 19 - 20, 1884	Central - Eastern U.S.	>41	>178 fatalities, ≥1056 injuries	Among largest known outbreaks (>37 significant, ≥4 violent, ≥28 killer)
Mississippi Valley Tornado Outbreak of April 1886	April 14, 1886	Middle-Upper Mississippi Valley	-	87 fatalities, 319 injuries	(4 violent, 6 killer)
1890 St. Louis Tornado Outbreak	January 12, 1890	Middle Mississippi Valley	-	16 fatalities, 91 injuries	(≥1 violent, 3 killer)
Mid-Mississippi Valley Tornado Outbreak of March 1890	March 27, 1890	Middle Mississippi Valley	-	≥146 fatalities, ≥847 injuries	76 killed in downtown Louisville, KY (≥24 significant, 6 violent, 16 killer)
Upper Mississippi Valley Tornado Outbreak of September 1894	September 21 - 22, 1894	Upper Mississippi Valley	-	>63 fatalities, >253 injuries	(>9 significant, 4 violent, 5 killer)
Sedgwick, Kansas-Hull, Iowa Tornado Outbreaks of 1895	May 1 - 3, 1895	Central-Northern Great Plains	-	>18-35 fatalities, >67 injuries	7 killed in schools in Ireton-Hull, IA (2 F5s, 3 killer)
Sherman, Texas Tornado Outbreak	May 15, 1896	Southern Great Plains	-	85 fatalities, ≥291 injuries
Central Plains Tornado Outbreak of 1896	May 17, 1896	Central Great Plains	-	25 fatalities, ≥260 injuries
Late-May 1896 Tornado Outbreak	May 24 - 25, 1896	Upper Mississippi Valley - Great Lakes (Ontario)	-	≥79 fatalities, >215 injuries
St. Louis-East St. Louis Tornado	May 27 - 28, 1896	Missouri - Illinois / Mid-Atlantic	-	≥305 fatalities, >1236 injuries	By far costliest tornado in history, 3rd deadliest in U.S. history (10 significant, 4 violent, 7 killer (27th))
Arkansas Tornado Outbreak of January 1898	January 11, 1898	Lower Mississippi Valley	-	≥56 fatalities, ≥119 injuries	(1 violent, 2 killer)
Mississippi Valley Tornado Outbreaks of May 1898	May 17 - 18, 1898	Middle-Upper Mississippi Valley	-	55 fatalities, ≥380 injuries	(5 violent, 10 killer)
Hondo Coal Mine, Mexico Tornado	May 10, 1899	Northern Mexico	-	≥22 fatalities	Deadliest Mexican tornado
New Richmond, Wisconsin Tornado Outbreak	June 11 - 12, 1899	Upper Midwest	-	≥124 fatalities, ≥203 injuries	(2 violent, 3 killer)

Event Date Area Tornadoes Casualties Notes
Kansas "Forgotten" Outbreak May 6, 1900 Central U.S. - ≥3 fatalities, ≥16 injuries Large outbreak with little known information (≥17 significant, 2 killer)
Goliad, Texas Tornado Outbreak May 18, 1902 South Central U.S. - 114 fatalities, ≥279 injuries (1 violent, 3 killer; tied with Waco Tornado as deadliest in Texas history)
Javaugues, France Tornado June 3, 1902 France - 1 fatality Widest known European tornado
Moscow, Russia Tornadoes June 29, 1904 Moscow, Russia ≥2 ≥30 fatalities
1904 St. Louis Tornado August 19, 1904 Missouri - Illinois ≥1 3 fatalities, ≥10 injuries Heavy damage in downtown St. Louis
Snyder, Oklahoma Tornado May 10, 1905 Oklahoma ≥1 97 fatalities, ≥150 injuries F5 largely destroyed Snyder
Southeast Tornado Outbreak of April 1908 April 23 - 25, 1908 Southeastern U.S. - 324 fatalities, ≥1,720 injuries (≥41 significant, 6 violent, 19 killer)
Late-April 1909 Tornado Outbreak April 29 - May 1, 1909 Mississippi - Tennessee Valley - ≥165 fatalities, ≥696 injuries (35 significant, 4 violent, 24 killer)
April 1912 Tornado Outbreak Sequence April 20 - 29, 1912 Southern-Central Great Plains - Middle Mississippi Valley - Southeastern U.S. - ≥104 fatalities, ≥630 injuries (≥59 significant, 17 violent, ≥34 killer)
Regina Cyclone June 30, 1912 Saskatchewan - 28 fatalities Deadliest Canadian tornado
Mid-March 1913 Tornado Outbreak March 13 - 14, 1913 Southeastern U.S. - Middle Mississippi Valley - 78 fatalities, ≥492 injuries (20 significant, 3 violent, 16 killer)
Easter Weekend 1913 Tornado Outbreak Sequence March 20 - 24, 1913 Southeastern U.S. - Central Great Plains - Middle Mississippi Valley - 48 fatalities, ≥1,535 injuries Omaha Easter Sunday Tornado (1913) on 23rd (≥26 significant, 7 violent, 18 killer)
Barry - Chester, U.K. Tornado October 27, 1913 Wales - England - Several fatalities Perhaps deadliest British tornadic supercell
June 1916 Tornado Outbreak June 5 - 6, 1916 Mississippi Valley - Southern U.S. - 112 fatalities, 741 injuries (34 significant, 1 violent, 23 killer)
Southeast Tornado Outbreak of February 1917 February 23, 1917 Southeastern U.S. - 17 fatalities, 81 injuries
New Albany, Indiana Tornado Outbreak of March 1917 March 23, 1917 Middle Mississippi Valley - 47 fatalities, 311 injuries
May - June 1917 Tornado Outbreak Sequence May 25 - 7, 1917 Central - Southeastern U.S. - >224 fatalities (>34 significant, >7 violent, >25 killer)
Brighton, Victoria Tornadoes February 2, 1918 Victoria, Australia 3 >2 fatalities
May 1918 Tornado Outbreak Sequence May 18 - 21, 1918 Central-Northern Great Plains - Upper Midwest - 44 fatalities, 340 injuries (≥34 significant, 5 violent, 13 killer)
March 1919 Tornado Outbreak March 14 - 16, 1919 Central U.S. - 53 fatalities, 219 injuries (4 violent, 18 killer)
April 1919 Tornado Outbreak April 8 - 9, 1919 Southern Great Plains - 92 fatalities, 412 injuries (4 violent, 10 killer)

Event	Date	Area	Tornadoes	Casualties	Notes
Kansas "Forgotten" Outbreak	May 6, 1900	Central U.S.	-	≥3 fatalities, ≥16 injuries	Large outbreak with little known information (≥17 significant, 2 killer)
Goliad, Texas Tornado Outbreak	May 18, 1902	South Central U.S.	-	114 fatalities, ≥279 injuries	(1 violent, 3 killer; tied with Waco Tornado as deadliest in Texas history)
Javaugues, France Tornado	June 3, 1902	France	-	1 fatality	Widest known European tornado
Moscow, Russia Tornadoes	June 29, 1904	Moscow, Russia	≥2	≥30 fatalities
1904 St. Louis Tornado	August 19, 1904	Missouri - Illinois	≥1	3 fatalities, ≥10 injuries	Heavy damage in downtown St. Louis
Snyder, Oklahoma Tornado	May 10, 1905	Oklahoma	≥1	97 fatalities, ≥150 injuries	F5 largely destroyed Snyder
Southeast Tornado Outbreak of April 1908	April 23 - 25, 1908	Southeastern U.S.	-	324 fatalities, ≥1,720 injuries	(≥41 significant, 6 violent, 19 killer)
Late-April 1909 Tornado Outbreak	April 29 - May 1, 1909	Mississippi - Tennessee Valley	-	≥165 fatalities, ≥696 injuries	(35 significant, 4 violent, 24 killer)
April 1912 Tornado Outbreak Sequence	April 20 - 29, 1912	Southern-Central Great Plains - Middle Mississippi Valley - Southeastern U.S.	-	≥104 fatalities, ≥630 injuries	(≥59 significant, 17 violent, ≥34 killer)
Regina Cyclone	June 30, 1912	Saskatchewan	-	28 fatalities	Deadliest Canadian tornado
Mid-March 1913 Tornado Outbreak	March 13 - 14, 1913	Southeastern U.S. - Middle Mississippi Valley	-	78 fatalities, ≥492 injuries	(20 significant, 3 violent, 16 killer)
Easter Weekend 1913 Tornado Outbreak Sequence	March 20 - 24, 1913	Southeastern U.S. - Central Great Plains - Middle Mississippi Valley	-	48 fatalities, ≥1,535 injuries	Omaha Easter Sunday Tornado (1913) on 23rd (≥26 significant, 7 violent, 18 killer)
Barry - Chester, U.K. Tornado	October 27, 1913	Wales - England	-	Several fatalities	Perhaps deadliest British tornadic supercell
June 1916 Tornado Outbreak	June 5 - 6, 1916	Mississippi Valley - Southern U.S.	-	112 fatalities, 741 injuries	(34 significant, 1 violent, 23 killer)
Southeast Tornado Outbreak of February 1917	February 23, 1917	Southeastern U.S.	-	17 fatalities, 81 injuries
New Albany, Indiana Tornado Outbreak of March 1917	March 23, 1917	Middle Mississippi Valley	-	47 fatalities, 311 injuries
May - June 1917 Tornado Outbreak Sequence	May 25 - 7, 1917	Central - Southeastern U.S.	-	>224 fatalities	(>34 significant, >7 violent, >25 killer)
Brighton, Victoria Tornadoes	February 2, 1918	Victoria, Australia	3	>2 fatalities
May 1918 Tornado Outbreak Sequence	May 18 - 21, 1918	Central-Northern Great Plains - Upper Midwest	-	44 fatalities, 340 injuries	(≥34 significant, 5 violent, 13 killer)
March 1919 Tornado Outbreak	March 14 - 16, 1919	Central U.S.	-	53 fatalities, 219 injuries	(4 violent, 18 killer)
April 1919 Tornado Outbreak	April 8 - 9, 1919	Southern Great Plains	-	92 fatalities, 412 injuries	(4 violent, 10 killer)

Event Date Area Tornadoes Casualties Notes
March 1920 Tornado Outbreak March 28, 1920 Midwest - Southeast - 153 fatalities, ≥897 injuries (31 significant, 8 violent, 19 killer)
Mississippi - Alabama Tornado Outbreaks of April 1920 April 19 - 21, 1920 Southeastern U.S. - 243 fatalities, 1374 injuries (6 violent, 9 killer)
April 1921 Tornado Outbreak April 15 - 16, 1921 Southern U.S. - 90 fatalities, 676 injuries (34 significant, 1 violent, 17 killer)
Great Plains Tornado Outbreak of November 1922 November 4, 1922 Great Plains - 17 fatalities, 68 injuries (1 violent, 4 killer)
April 1924 Tornado Outbreak April 30, 1924 Southeastern U.S. - 110 fatalities, 1133 injuries 7 killed at school in Horrell Hill, SC (24 significant, 2 violent, 16 killer)
Sandusky - Lorain, Ohio Tornado Outbreak June 28, 1924 Eastern Great Lakes - 90 fatalities, 349 injuries (≥6 significant, 1 violent, 4 killer)
Tri-State Tornado March 18, 1925 Middle Mississippi - Ohio Valley ≥9 ≥747 fatalities, ≥2298 injuries Deadliest and 3rd costliest U.S., longest path and duration in world (≥9 significant, 3 violent, 8 killer)
Borculo, Netherlands Tornado August 10, 1925 Gelderland, Netherlands - 3 fatalities
La Plata, Maryland Tornado of November 1926 November 9, 1926 Mid-Atlantic - 17 fatalities, 65 injuries 17 killed at schools
Late-November 1926 Tornado Outbreak November 25 - 26, 1926 Southern U.S. - 107 fatalities, 451 injuries (27 significant, 2 violent, 18 killer)
Southern Plains - Midwest Tornado Outbreaks of April 1927 April 18 - 19, 1927 Southern Great Plains - Midwest - 146 fatalities, ≥235 injuries (16 significant, 3 violent, 5 killer)
May 1927 Tornado Outbreak May 8 - 9, 1927 Great Plains - Mississippi Valley - 217 fatalities, 1156 injuries (32 significant, 8 violent, 17 killer) + 1 F5 with 10 fatalities and 300 injuries in Kansas on May 7
Lichtenvoorde - Neede - Tubbergen, Netherlands Tornado June 1, 1927 Netherlands - Germany - 10 fatalities
St. Louis Tornado Outbreak of 1927 September 29, 1927 Middle-Lower Mississippi Valley - 82 fatalities, 620 injuries Second costliest tornado in history (11 significant, 1 violent, 3 killer)
Upper Plains - Midwest Tornado Outbreak of September 1928 September 13 - 14, 1928 Upper Great Plains - Midwest - 23 fatalities, 197 injuries (15 significant, 3 violent, 3 killer)
Middle-Mississippi Valley Tornado Outbreak of January 1929 January 18, 1929 Middle Mississippi Valley - 10 fatalities, 46 injuries (7 significant, 5 killer)
Slocum, Texas - Statesboro, Georgia Tornado Outbreaks April 24 - 25, 1929 Great Plains - Midwest - Southeast - 63 fatalities, 567 injuries (15 significant, 4 violent, 7 killer)
Rye Cove, Virginia Tornado Outbreaks May 1 - 2, 1929 Southern - Eastern U.S. - 44 fatalities, 349 injuries 13 killed at school in Rye Cove, VA (17 significant, 10 killer)

Event	Date	Area	Tornadoes	Casualties	Notes
March 1920 Tornado Outbreak	March 28, 1920	Midwest - Southeast	-	153 fatalities, ≥897 injuries	(31 significant, 8 violent, 19 killer)
Mississippi - Alabama Tornado Outbreaks of April 1920	April 19 - 21, 1920	Southeastern U.S.	-	243 fatalities, 1374 injuries	(6 violent, 9 killer)
April 1921 Tornado Outbreak	April 15 - 16, 1921	Southern U.S.	-	90 fatalities, 676 injuries	(34 significant, 1 violent, 17 killer)
Great Plains Tornado Outbreak of November 1922	November 4, 1922	Great Plains	-	17 fatalities, 68 injuries	(1 violent, 4 killer)
April 1924 Tornado Outbreak	April 30, 1924	Southeastern U.S.	-	110 fatalities, 1133 injuries	7 killed at school in Horrell Hill, SC (24 significant, 2 violent, 16 killer)
Sandusky - Lorain, Ohio Tornado Outbreak	June 28, 1924	Eastern Great Lakes	-	90 fatalities, 349 injuries	(≥6 significant, 1 violent, 4 killer)
Tri-State Tornado	March 18, 1925	Middle Mississippi - Ohio Valley	≥9	≥747 fatalities, ≥2298 injuries	Deadliest and 3rd costliest U.S., longest path and duration in world (≥9 significant, 3 violent, 8 killer)
Borculo, Netherlands Tornado	August 10, 1925	Gelderland, Netherlands	-	3 fatalities
La Plata, Maryland Tornado of November 1926	November 9, 1926	Mid-Atlantic	-	17 fatalities, 65 injuries	17 killed at schools
Late-November 1926 Tornado Outbreak	November 25 - 26, 1926	Southern U.S.	-	107 fatalities, 451 injuries	(27 significant, 2 violent, 18 killer)
Southern Plains - Midwest Tornado Outbreaks of April 1927	April 18 - 19, 1927	Southern Great Plains - Midwest	-	146 fatalities, ≥235 injuries	(16 significant, 3 violent, 5 killer)
May 1927 Tornado Outbreak	May 8 - 9, 1927	Great Plains - Mississippi Valley	-	217 fatalities, 1156 injuries	(32 significant, 8 violent, 17 killer) + 1 F5 with 10 fatalities and 300 injuries in Kansas on May 7
Lichtenvoorde - Neede - Tubbergen, Netherlands Tornado	June 1, 1927	Netherlands - Germany	-	10 fatalities
St. Louis Tornado Outbreak of 1927	September 29, 1927	Middle-Lower Mississippi Valley	-	82 fatalities, 620 injuries	Second costliest tornado in history (11 significant, 1 violent, 3 killer)
Upper Plains - Midwest Tornado Outbreak of September 1928	September 13 - 14, 1928	Upper Great Plains - Midwest	-	23 fatalities, 197 injuries	(15 significant, 3 violent, 3 killer)
Middle-Mississippi Valley Tornado Outbreak of January 1929	January 18, 1929	Middle Mississippi Valley	-	10 fatalities, 46 injuries	(7 significant, 5 killer)
Slocum, Texas - Statesboro, Georgia Tornado Outbreaks	April 24 - 25, 1929	Great Plains - Midwest - Southeast	-	63 fatalities, 567 injuries	(15 significant, 4 violent, 7 killer)
Rye Cove, Virginia Tornado Outbreaks	May 1 - 2, 1929	Southern - Eastern U.S.	-	44 fatalities, 349 injuries	13 killed at school in Rye Cove, VA (17 significant, 10 killer)

Event Date Area Tornadoes Casualties Notes
May 1930 Tornado Outbreak Sequence May 1 - 2 & 5 - 6, 1930 Great Plains - Mississippi Valley - 94 fatalities, 520 injuries (51 significant, 11 violent, 15 killer)
Po - Udine, Italy Tornado July 24, 1930 Italy - ≥23 fatalities Perhaps strongest European tornado struck tornadicly active area of Italy
Southern Plains Tornado Outbreak of November 1930 November 19, 1930 Southern Great Plains - 24 fatalities, 162 injuries (8 significant, 1 violent, 2 killer)
Deep South Outbreak of 1932 March 21 - 22, 1932 Southeastern U.S. - ≥330 fatalities, 2145 injuries (36 significant, 10 violent, 27 killer)
Nashville Tornado Outbreak of March 1933 March 14, 1933 Tennessee Valley - 44 fatalities, 461 injuries Destructive killer tornado through downtown Nashville (5 significant, 1 violent, 4 killer)
Late-March 1933 Tornado Outbreak March 30 - 31, 1933 Southeast - 87 fatalities, 620 injuries (30 significant, 1 violent, 16 killer)
June 9, 1935 Doubs -
Greensboro, North Carolina Tornado Outbreak April 1 - 2, 1936 Southeast - 45 fatalities, 568 injuries (8 significant, 2 violent, 8 killer)
Tupelo-Gainesville Outbreak April 5 - 6, 1936 Southeastern U.S. - 454 fatalities, 2498 injuries (12 significant, 3 violent, 11 killer)
Bakerville, Missouri Tornado Outbreak March 15, 1938 Mississippi Valley - 24 fatalities, 200 injuries (14 significant, 2 violent, 6 killer)
Late-March 1938 Tornado Outbreak March 30 - 31, 1938 Southern Plains - Mississippi Valley - 40 fatalities, 548 injuries (26 significant, 3 violent, 9 killer)
Oshkosh, Nebraska Tornado Outbreak April 26, 1938 Great Plains - 6 fatalities, 39 injuries Oshkosh completely destroyed killing students at leveled school (8 significant, 2 violent, 2 killer)
Charleston, South Carolina Tornadoes September 29, 1938 South Carolina - 32 fatalities, 100 injuries (2 killers)
April 1939 Tornado Outbreak Sequence April 14 - 17, 1939 Great Plains - Mississippi Valley - 57 fatalities, 316 injuries (25 significant, 3 violent, 11 killer)

Event	Date	Area	Tornadoes	Casualties	Notes
May 1930 Tornado Outbreak Sequence	May 1 - 2 & 5 - 6, 1930	Great Plains - Mississippi Valley	-	94 fatalities, 520 injuries	(51 significant, 11 violent, 15 killer)
Po - Udine, Italy Tornado	July 24, 1930	Italy	-	≥23 fatalities	Perhaps strongest European tornado struck tornadicly active area of Italy
Southern Plains Tornado Outbreak of November 1930	November 19, 1930	Southern Great Plains	-	24 fatalities, 162 injuries	(8 significant, 1 violent, 2 killer)
Deep South Outbreak of 1932	March 21 - 22, 1932	Southeastern U.S.	-	≥330 fatalities, 2145 injuries	(36 significant, 10 violent, 27 killer)
Nashville Tornado Outbreak of March 1933	March 14, 1933	Tennessee Valley	-	44 fatalities, 461 injuries	Destructive killer tornado through downtown Nashville (5 significant, 1 violent, 4 killer)
Late-March 1933 Tornado Outbreak	March 30 - 31, 1933	Southeast	-	87 fatalities, 620 injuries	(30 significant, 1 violent, 16 killer)
	June 9, 1935	Doubs	-
Greensboro, North Carolina Tornado Outbreak	April 1 - 2, 1936	Southeast	-	45 fatalities, 568 injuries	(8 significant, 2 violent, 8 killer)
Tupelo-Gainesville Outbreak	April 5 - 6, 1936	Southeastern U.S.	-	454 fatalities, 2498 injuries	(12 significant, 3 violent, 11 killer)
Bakerville, Missouri Tornado Outbreak	March 15, 1938	Mississippi Valley	-	24 fatalities, 200 injuries	(14 significant, 2 violent, 6 killer)
Late-March 1938 Tornado Outbreak	March 30 - 31, 1938	Southern Plains - Mississippi Valley	-	40 fatalities, 548 injuries	(26 significant, 3 violent, 9 killer)
Oshkosh, Nebraska Tornado Outbreak	April 26, 1938	Great Plains	-	6 fatalities, 39 injuries	Oshkosh completely destroyed killing students at leveled school (8 significant, 2 violent, 2 killer)
Charleston, South Carolina Tornadoes	September 29, 1938	South Carolina	-	32 fatalities, 100 injuries	(2 killers)
April 1939 Tornado Outbreak Sequence	April 14 - 17, 1939	Great Plains - Mississippi Valley	-	57 fatalities, 316 injuries	(25 significant, 3 violent, 11 killer)

Event Date Area Tornadoes Casualties Notes
Bejucal, Cuba Tornado December 26, 1940 Cuba - 12 fatalities Reportedly spawned during hurricane
February 1942 Tornado Outbreak February 5 - 6, 1942 Southeast - 22 fatalities, 330 injuries (22 significant, 9 killer)
March 1942 Tornado Outbreak March 16, 1942 Central - Southern U.S. - 148 fatalities, ≥1284 injuries (26 significant, 5 violent, 18 killer)
April - May 1942 Tornado Outbreak Sequence April 27 - 30 & May 2, 1942 Great Plains - 123 fatalities, ≥839 injuries (20 significant, 11 violent, 17 killer)
May 1943 Tornado Outbreak May 15, 1943 Great Plains - ≥6 fatalities, ≥222 injuries (21 significant, 4 violent, 2 killer)
January 1944 Oklahoma Tornado Outbreak January 26. 1944 Southern Great Plains - 2 fatalities, 40 injuries (8 significant, 2 killer)
Appalachians Outbreak June 22 - 23, 1944 Great Lakes - Mid Atlantic - 163 fatalities, ≥1044 injuries (≥9 significant, 4 violent, 7 killer)
April 1945 Tornado Outbreak April 12, 1945 - - 128 fatalities, 1001 injuries (17 significant, 5 violent, 10 killer)
Windsor - Tecumseh, Ontario Tornado of 1946 June 17, 1946 Michigan - Ontario 1 ≈18 fatalities
Fort Frances, Ontario Tornado June 25, 1946 Minnesota - Northwestern Ontario 1 Crossed the Rainy River, caused severe damage to Fort Frances, Ontario's waterfront.
January 1947 Tornado Outbreak January 29 - 30, 1947 Mississippi Valley - Southeast - 8 fatalities, 155 injuries (15 significant, 1 violent, 5 killer)
Glazier-Higgins-Woodward Tornadoes April 9 - 10, 1947 Southern Great Plains - 181 fatalities, 980 injuries (8 significant, 2 violent, 1 killer)
New Years Eve Tornado Outbreak of 1947 December 31, 1947 Southern U.S. - 20 fatalities, 256 injuries (7 significant, 1 violent, 3 killer)
Alton - Bunker Hill - Gillespie Tornado Outbreak March 18 - 19, 1948 Great Plains - Middle Mississippi Valley - 43 fatalities, ≥566 injuries (25 significant, 3 violent, 5 killer)
Late-March 1948 Tornado Outbreak March 25 - March 27, 1948 Central U.S. - 37 fatalities, 321 injuries (19 significant, 3 violent, 5 killer)
Frankton - Hamilton, New Zealand Tornado August 25, 1948 New Zealand - 3 fatalities, 80 injuries F2 damages 163 buildings and 50 businesses
South Africa, Johannesburg/Pretoria Tornado November 26, 1948 Highveld - 6 fatalities, 100 injuries 64km track crossed major urban areas
Warren, Arkansas Tornado Outbreak January 3, 1949 South Central U.S. - 60 fatalities, 504 injuries (12 significant, 1 violent, 5 killer)
May 1949 Tornado Outbreak May 20 - 21, 1949 Central - Southeastern U.S. - ≥56 fatalities, ≥552 injuries Perhaps 2nd most intense known outbreak (≥29 significant, ≥5 violent, ≥2 killer)
October 1949 Tornado Outbreak October 9 - 10, 1949 Great Plains - 2 fatalities, 6 injuries (11 significant, 2 killer)

Event	Date	Area	Tornadoes	Casualties	Notes
Bejucal, Cuba Tornado	December 26, 1940	Cuba	-	12 fatalities	Reportedly spawned during hurricane
February 1942 Tornado Outbreak	February 5 - 6, 1942	Southeast	-	22 fatalities, 330 injuries	(22 significant, 9 killer)
March 1942 Tornado Outbreak	March 16, 1942	Central - Southern U.S.	-	148 fatalities, ≥1284 injuries	(26 significant, 5 violent, 18 killer)
April - May 1942 Tornado Outbreak Sequence	April 27 - 30 & May 2, 1942	Great Plains	-	123 fatalities, ≥839 injuries	(20 significant, 11 violent, 17 killer)
May 1943 Tornado Outbreak	May 15, 1943	Great Plains	-	≥6 fatalities, ≥222 injuries	(21 significant, 4 violent, 2 killer)
January 1944 Oklahoma Tornado Outbreak	January 26. 1944	Southern Great Plains	-	2 fatalities, 40 injuries	(8 significant, 2 killer)
Appalachians Outbreak	June 22 - 23, 1944	Great Lakes - Mid Atlantic	-	163 fatalities, ≥1044 injuries	(≥9 significant, 4 violent, 7 killer)
April 1945 Tornado Outbreak	April 12, 1945	-	-	128 fatalities, 1001 injuries	(17 significant, 5 violent, 10 killer)
Windsor - Tecumseh, Ontario Tornado of 1946	June 17, 1946	Michigan - Ontario	1	≈18 fatalities
Fort Frances, Ontario Tornado	June 25, 1946	Minnesota - Northwestern Ontario	1		Crossed the Rainy River, caused severe damage to Fort Frances, Ontario's waterfront.
January 1947 Tornado Outbreak	January 29 - 30, 1947	Mississippi Valley - Southeast	-	8 fatalities, 155 injuries	(15 significant, 1 violent, 5 killer)
Glazier-Higgins-Woodward Tornadoes	April 9 - 10, 1947	Southern Great Plains	-	181 fatalities, 980 injuries	(8 significant, 2 violent, 1 killer)
New Years Eve Tornado Outbreak of 1947	December 31, 1947	Southern U.S.	-	20 fatalities, 256 injuries	(7 significant, 1 violent, 3 killer)
Alton - Bunker Hill - Gillespie Tornado Outbreak	March 18 - 19, 1948	Great Plains - Middle Mississippi Valley	-	43 fatalities, ≥566 injuries	(25 significant, 3 violent, 5 killer)
Late-March 1948 Tornado Outbreak	March 25 - March 27, 1948	Central U.S.	-	37 fatalities, 321 injuries	(19 significant, 3 violent, 5 killer)
Frankton - Hamilton, New Zealand Tornado	August 25, 1948	New Zealand	-	3 fatalities, 80 injuries	F2 damages 163 buildings and 50 businesses
South Africa, Johannesburg/Pretoria Tornado	November 26, 1948	Highveld	-	6 fatalities, 100 injuries	64km track crossed major urban areas
Warren, Arkansas Tornado Outbreak	January 3, 1949	South Central U.S.	-	60 fatalities, 504 injuries	(12 significant, 1 violent, 5 killer)
May 1949 Tornado Outbreak	May 20 - 21, 1949	Central - Southeastern U.S.	-	≥56 fatalities, ≥552 injuries	Perhaps 2nd most intense known outbreak (≥29 significant, ≥5 violent, ≥2 killer)
October 1949 Tornado Outbreak	October 9 - 10, 1949	Great Plains	-	2 fatalities, 6 injuries	(11 significant, 2 killer)

Event Date Area Tornadoes Casualties Notes
Buckinghamshire-Cambridgeshire, England Tornadoes May 21, 1950 UK - - Longest known British tornado/tornado family
Serangoon, Singapore Tornado November 2, 1950 Singapore - 7 injuries
Arkansas/Tennessee Outbreak of 1952 March 21 - 22, 1952 Lower-Middle Mississippi Valley - 208 fatalities (19 significant, 8 violent, 13 killer)
Albertynesville, South Africa Tornado November 30, 1952 South Africa - 20 fatalities, 400 injuries
Paynesville, South Africa Tornado December 2, 1952 South Africa - 11 fatalities
Devonshire, Bermuda Tornado April 5, 1953 Bermuda - 1 fatality, 9 injuries Tornadic waterspout
April - May 1953 Tornado Outbreak Sequence April 28 - May 2, 1953 Southeastern U.S. - 37 fatalities, 366 injuries (17 significant, 5 violent, 9 killer)
Mid-May 1953 Tornado Outbreak Sequence May 9 - 11, 1953 Southern-Central Great Plains / Upper Mississippi Valley - 144 fatalities, 903 injuries Waco Tornado occurred during Texan outbreak of May 11 (19 significant, 6 violent, 7 killer), tied for deadliest in Texas history
Veluwe, Gelderland-Haulerwijk, Friesland, Netherlands Tornadoes August 23, 1950 Gelderland - Friesland, Netherlands - -
Flint-Worcester Tornadoes June 7 - 9, 1953 Central Great Plains - Great Lakes - New England - 246 fatalities (11 significant, 1 violent killer on 7th; 10 significant, 4 violent, 8 killer on 8th; 3 significant, 1 violent killer on 9th; 24 significant, 6 violent, 10 killer for sequence)
Vicksburg, Mississippi Tornado Outbreak December 5, 1953 Louisiana - Mississippi - 38 fatalities (4 significant, 1 violent killer)
Castelo Branco, Portugal Tornado November 6, 1954 Portugal - 4 fatalities, 200 injuries
Commerce Landing, Mississippi Tornado Outbreak February 1, 1955 Mississippi - Alabama - 23 fatalities 23 killed at school in Commerce Landing, MS (>2 significant)
Udall, Kansas Tornado Outbreak May 25 - 26, 1955 Texas - Oklahoma - Kansas - 102 fatalities Last 75 fatality single tornado in the U.S. (8 significant, 3 violent, 3 killer)
February 1956 Tornado Outbreak February 24 - 25, 1956 Central U.S. - 6 fatalities (14 significant, 2 violent killers)
April 1956 Tornado Outbreak April 2 - 3, 1956 Central U.S. - 40 fatalities (33 significant, 7 violent, 8 killer)
1957 Dallas Tornado Outbreak April 2, 1957 Texas - Oklahoma - 17 fatalities (16 significant, 2 violent, 5 killer)
Lubbock Area Tornado Outbreak of April 1957 April 21, 1957 Texas - 0 fatalities (4 significant, 2 violent)
Silverton, Texas Tornado Outbreak May 15, 1957 Texas - 21 fatalities (6 significant, 1 violent, 2 killer)
Kansas City Tornado Outbreak of May 1957 May 20 - 21, 1957 Central Great Plains - Middle-Upper Mississippi Valley - 59 fatalities (32 significant, 4 violent, 3 killer)
Fargo Tornado June 20, 1957 Northern Great Plains - 11 fatalities (4 significant, 2 violent, 2 killer)
November 1957 Tornado Outbreak November 7 - 8, 1957 Southeastern U.S. - 12 fatalities (12 significant, 1 violent, 5 killer)
Murphysburo, Illinois Tornado Outbreak December 18, 1957 Missouri - Illinois - 17 fatalities (18 significant, 3 violent, 5 killer)
Rawa Mazowiecka, Poland Tornado May 15, 1958 Poland - 3 fatalities, >100 injuries
Colfax, Wisconsin Tornado Outbreak June 4, 1958 Minnesota - Wisconsin - 28 fatalities (6 significant, 3 violent killers)
November 1958 Tornado Outbreak November 17, 1958 Southern U.S. - 0 fatalities (16 significant)
1959 St. Louis Tornado Outbreak February 10, 1959 Middle Mississippi Valley - 21 fatalities Destructive tornado in downtown St. Louis (7 significant, 1 violent killer)
May 1959 Tornado Outbreak May 4 - 5, 1959 Central U.S. 49 0 fatalities (8 significant)

Event	Date	Area	Tornadoes	Casualties	Notes
Buckinghamshire-Cambridgeshire, England Tornadoes	May 21, 1950	UK	-	-	Longest known British tornado/tornado family
Serangoon, Singapore Tornado	November 2, 1950	Singapore	-	7 injuries
Arkansas/Tennessee Outbreak of 1952	March 21 - 22, 1952	Lower-Middle Mississippi Valley	-	208 fatalities	(19 significant, 8 violent, 13 killer)
Albertynesville, South Africa Tornado	November 30, 1952	South Africa	-	20 fatalities, 400 injuries
Paynesville, South Africa Tornado	December 2, 1952	South Africa	-	11 fatalities
Devonshire, Bermuda Tornado	April 5, 1953	Bermuda	-	1 fatality, 9 injuries	Tornadic waterspout
April - May 1953 Tornado Outbreak Sequence	April 28 - May 2, 1953	Southeastern U.S.	-	37 fatalities, 366 injuries	(17 significant, 5 violent, 9 killer)
Mid-May 1953 Tornado Outbreak Sequence	May 9 - 11, 1953	Southern-Central Great Plains / Upper Mississippi Valley	-	144 fatalities, 903 injuries	Waco Tornado occurred during Texan outbreak of May 11 (19 significant, 6 violent, 7 killer), tied for deadliest in Texas history
Veluwe, Gelderland-Haulerwijk, Friesland, Netherlands Tornadoes	August 23, 1950	Gelderland - Friesland, Netherlands	-	-
Flint-Worcester Tornadoes	June 7 - 9, 1953	Central Great Plains - Great Lakes - New England	-	246 fatalities	(11 significant, 1 violent killer on 7th; 10 significant, 4 violent, 8 killer on 8th; 3 significant, 1 violent killer on 9th; 24 significant, 6 violent, 10 killer for sequence)
Vicksburg, Mississippi Tornado Outbreak	December 5, 1953	Louisiana - Mississippi	-	38 fatalities	(4 significant, 1 violent killer)
Castelo Branco, Portugal Tornado	November 6, 1954	Portugal	-	4 fatalities, 200 injuries
Commerce Landing, Mississippi Tornado Outbreak	February 1, 1955	Mississippi - Alabama	-	23 fatalities	23 killed at school in Commerce Landing, MS (>2 significant)
Udall, Kansas Tornado Outbreak	May 25 - 26, 1955	Texas - Oklahoma - Kansas	-	102 fatalities	Last 75 fatality single tornado in the U.S. (8 significant, 3 violent, 3 killer)
February 1956 Tornado Outbreak	February 24 - 25, 1956	Central U.S.	-	6 fatalities	(14 significant, 2 violent killers)
April 1956 Tornado Outbreak	April 2 - 3, 1956	Central U.S.	-	40 fatalities	(33 significant, 7 violent, 8 killer)
1957 Dallas Tornado Outbreak	April 2, 1957	Texas - Oklahoma	-	17 fatalities	(16 significant, 2 violent, 5 killer)
Lubbock Area Tornado Outbreak of April 1957	April 21, 1957	Texas	-	0 fatalities	(4 significant, 2 violent)
Silverton, Texas Tornado Outbreak	May 15, 1957	Texas	-	21 fatalities	(6 significant, 1 violent, 2 killer)
Kansas City Tornado Outbreak of May 1957	May 20 - 21, 1957	Central Great Plains - Middle-Upper Mississippi Valley	-	59 fatalities	(32 significant, 4 violent, 3 killer)
Fargo Tornado	June 20, 1957	Northern Great Plains	-	11 fatalities	(4 significant, 2 violent, 2 killer)
November 1957 Tornado Outbreak	November 7 - 8, 1957	Southeastern U.S.	-	12 fatalities	(12 significant, 1 violent, 5 killer)
Murphysburo, Illinois Tornado Outbreak	December 18, 1957	Missouri - Illinois	-	17 fatalities	(18 significant, 3 violent, 5 killer)
Rawa Mazowiecka, Poland Tornado	May 15, 1958	Poland	-	3 fatalities, >100 injuries
Colfax, Wisconsin Tornado Outbreak	June 4, 1958	Minnesota - Wisconsin	-	28 fatalities	(6 significant, 3 violent killers)
November 1958 Tornado Outbreak	November 17, 1958	Southern U.S.	-	0 fatalities	(16 significant)
1959 St. Louis Tornado Outbreak	February 10, 1959	Middle Mississippi Valley	-	21 fatalities	Destructive tornado in downtown St. Louis (7 significant, 1 violent killer)
May 1959 Tornado Outbreak	May 4 - 5, 1959	Central U.S.	49	0 fatalities	(8 significant)

Event Date Area Tornadoes Casualties Notes
May 1960 Tornado Outbreak May 5 - 6, 1960 Southern Great Plains - 33 fatalities (25 significant, 4 violent, 8 killer)
Hurricane Carla September 1961 Southern U.S. ≥8 - 1 F0, 6 F1's, 8 F2's , 7 F3's 2 Killer, 1 F4 Killer Tornado
[link] Assam, India Tornado April 19, 1963 Assam, India - 139 fatalities
[link] Magura-Narail Districts, Bangladesh Tornado April 11, 1964 Khulna Division, Bangladesh - >500 fatalities
Tokyo, Japan Tornado May 24, 1964 Southwestern suburbs Tokyo, Japan - - 480 houses damaged
Palm Sunday Tornado Outbreak April 11 - 12, 1965 Central U.S. 48 256 fatalities Among most intense recorded outbreaks (38 significant, 19 violent, 21 killer)
May 1965 Tornado Outbreak Sequence May 5, 6, 8, 9, 15, 1965 Upper Midwest - 18 fatalities (39 significant, 10 violent, 5 killer)
Late-May 1965 Tornado Outbreak May 25 - 26, 1965 Great Plains 51 0 fatalities (9 significant)
Parma, Italy Tornado July 4, 1965 Italy ≥1 25 fatalities, 160 injuries
Encarnación, Paraguay Tornado October 25, 1965 Paraguay - - 100 homes destroyed
Topeka Tornado of 1966 June 8 - 9, 1966 Kansas - Illinois - 18 fatalities (5 significant, 2 violent, 3 killer)
1967 St. Louis Tornado Outbreak January 24, 1967 Midwest - 7 fatalities (18 significant, 2 violent, 4 killer)
Belvidere - Oak Lawn Tornado Outbreak April 21, 1967 Midwest 45 58 fatalities Large school and traffic death tolls (20 significant, 4 violent, 3 killer)
Western Europe Tornado Outbreaks of 1967 June 24 - 25, 1967 France - Netherlands - Belgium - ≥15 fatalities Same storm system produced two destructive outbreaks with fatalities in three countries
Hurricane Beulah September 19 - 23, 1967 Texas - Mexico >115 5 fatalities
Wheelersburg, Ohio Tornado Outbreak April 23, 1968 Ohio Valley - 14 fatalities (7 significant, 3 violent killers)
May 1968 Tornado Outbreak May 15 - 16, 1968 Mississippi Valley 46 74 fatalities (20 significant, 4 violent, 8 killer)
Acabebe - Masantol, Philippines Tornado June 13, 1968 Philippines - 12 fatalities
German Black Forest Tornado July 10, 1968 Germany - 3 fatalities
Vichadero, Uruguay Tornado October 25, 1968 Uruguay - 1 fatality, 12 injuries
Georgia Tornado of 1969 April 4, 1969 Georgia - About 50 Injures F2 Tornado Had A Track Path of 218 Miles
[link] Bangladesh Tornadoes of April 1969 April 14, 1969 Bangladesh ≥2 923 fatalities
Cincinnati Tornado Outbreak of August 1969 August 9, 1969 Indiana - Ohio - 4 fatalities (2 significant)
Hazelhurst, Mississippi Tornado Outbreak January 23, 1969 Southeastern U.S. - 32 fatalities (2 significant, 1 violent killer)
Nicosia, Cyprus Tornadoes December 22, 1969 Cyprus Several 4 fatalities Waterspouts (probably tornadic) came ashore

Event	Date	Area	Tornadoes	Casualties	Notes
May 1960 Tornado Outbreak	May 5 - 6, 1960	Southern Great Plains	-	33 fatalities	(25 significant, 4 violent, 8 killer)
Hurricane Carla	September 1961	Southern U.S.	≥8	-	1 F0, 6 F1's, 8 F2's , 7 F3's 2 Killer, 1 F4 Killer Tornado
[link] Assam, India Tornado	April 19, 1963	Assam, India	-	139 fatalities
[link] Magura-Narail Districts, Bangladesh Tornado	April 11, 1964	Khulna Division, Bangladesh	-	>500 fatalities
Tokyo, Japan Tornado	May 24, 1964	Southwestern suburbs Tokyo, Japan	-	-	480 houses damaged
Palm Sunday Tornado Outbreak	April 11 - 12, 1965	Central U.S.	48	256 fatalities	Among most intense recorded outbreaks (38 significant, 19 violent, 21 killer)
May 1965 Tornado Outbreak Sequence	May 5, 6, 8, 9, 15, 1965	Upper Midwest	-	18 fatalities	(39 significant, 10 violent, 5 killer)
Late-May 1965 Tornado Outbreak	May 25 - 26, 1965	Great Plains	51	0 fatalities	(9 significant)
Parma, Italy Tornado	July 4, 1965	Italy	≥1	25 fatalities, 160 injuries
Encarnación, Paraguay Tornado	October 25, 1965	Paraguay	-	-	100 homes destroyed
Topeka Tornado of 1966	June 8 - 9, 1966	Kansas - Illinois	-	18 fatalities	(5 significant, 2 violent, 3 killer)
1967 St. Louis Tornado Outbreak	January 24, 1967	Midwest	-	7 fatalities	(18 significant, 2 violent, 4 killer)
Belvidere - Oak Lawn Tornado Outbreak	April 21, 1967	Midwest	45	58 fatalities	Large school and traffic death tolls (20 significant, 4 violent, 3 killer)
Western Europe Tornado Outbreaks of 1967	June 24 - 25, 1967	France - Netherlands - Belgium	-	≥15 fatalities	Same storm system produced two destructive outbreaks with fatalities in three countries
Hurricane Beulah	September 19 - 23, 1967	Texas - Mexico	>115	5 fatalities
Wheelersburg, Ohio Tornado Outbreak	April 23, 1968	Ohio Valley	-	14 fatalities	(7 significant, 3 violent killers)
May 1968 Tornado Outbreak	May 15 - 16, 1968	Mississippi Valley	46	74 fatalities	(20 significant, 4 violent, 8 killer)
Acabebe - Masantol, Philippines Tornado	June 13, 1968	Philippines	-	12 fatalities
German Black Forest Tornado	July 10, 1968	Germany	-	3 fatalities
Vichadero, Uruguay Tornado	October 25, 1968	Uruguay	-	1 fatality, 12 injuries
Georgia Tornado of 1969	April 4, 1969	Georgia	-	About 50 Injures	F2 Tornado Had A Track Path of 218 Miles
[link] Bangladesh Tornadoes of April 1969	April 14, 1969	Bangladesh	≥2	923 fatalities
Cincinnati Tornado Outbreak of August 1969	August 9, 1969	Indiana - Ohio	-	4 fatalities	(2 significant)
Hazelhurst, Mississippi Tornado Outbreak	January 23, 1969	Southeastern U.S.	-	32 fatalities	(2 significant, 1 violent killer)
Nicosia, Cyprus Tornadoes	December 22, 1969	Cyprus	Several	4 fatalities	Waterspouts (probably tornadic) came ashore

Event Date Area Tornadoes Casualties Notes
Buladelah, NSW, Australia Tornado January 1, 1970 New South Wales, Australia - 0 fatalities Likely strongest Australian tornado
April 1970 Tornado Outbreak April 17 - 18, 1970 Southern Great Plains - 23 fatalities (7 significant, 4 violent, 3 killer)
Lubbock Tornado May 11, 1970 West Texas - 28 fatalities (1 violent killer)
Venice, Italy Tornado Outbreak September 11, 1970 Italy Several ≥40 fatalities
Mississippi Valley Tornado Outbreak of February 1971 February 21, 1971 Southern Mississippi Valley - 119 fatalities (4 killer)
Kin Kin, Queensland Tornado August 14, 1971 Queensland, Australia - 3 fatalities Likely deadliest Australian tornado
Sudbury, Ontario Tornado of 1970 August 20, 1970 Ontario, Canada - 6 fatalities (1 killer)
Springfield, Missouri Tornado Outbreak of 1971 December 14 - 15, 1971 Central U.S. 40 2 fatalities (10 significant, 2 killer)
Ameland Island, Netherlands Tornado August 11, 1972 Friesland, Netherlands - 7 fatalities, 90 injuries
[link] San Justo, Argentina Tornado January 10, 1973 Buenos Aires Province, Argentina - 54 fatalities, 350 injuries Large, perhaps violent, tornado
Georgia - South Carolina Outbreak of March 1973 March 31, 1973 Georgia - South Carolina - 10 fatalities Extremely destructive tornadoes, costliest natural disaster in Georgia history (3 violent killers)
[link] Dhaka District, Bangladesh Tornado April 17, 1973 Dhaka Division, Bangladesh - 681 fatalities
May 1973 Tornado Outbreak May 26 - 29, 1973 Southern U.S. 99 22 fatalities (26 significant, 3 violent, 8 killer)
Brisbane, Queensland Tornado November 4, 1973 Queensland, Australia - 0 fatalities Perhaps most destructive Australian tornado
Super Outbreak April 3 - 4, 1974 Eastern U.S. - Ontario 148 315 fatalities Largest and most intense recorded outbreak (95 significant, 30 violent (6 F5), 49 killer)
January 1975 Tornado Outbreak January 9 - 10, 1975 Southeastern U.S. 47 11 fatalities (9 significant, 1 violent, 3 killer)
Omaha Tornado of 1975 May 6, 1975 Nortern Great Plains - 3 fatalities (6 significant, 2 violent, 1 killer)
Canton, Illinois Tornado of 1975 July 23, 1975 Illinois - 2 fatalities
Port Headland, Australia Tornado December 17, 1975 Western Australia, Australia - -
March 1976 Tornado Outbreak March 20 - 21, 1976 Mississippi Valley 66 3 fatalities (18 significant, 3 violent, 3 killer)
South Africa, Trompsburg Tornado November 5, 1976 Karoo - 5+ fatalities Longest path ever measured in SA, 175km, mostly through desert
Sandon, Australia Tornadoes November 13, 1976 Victoria, Australia 3 2 fatalities
[link] Madaripur-Shibchar, Bangladesh Tornado April 1, 1977 Dhaka Division, Bangladesh - 500 fatalities
New Delhi, India Tornado of March 1978 March 17, 1978 National Capital Region, India - 28 fatalities, 700 injuries
[link] Orissa, India Tornado April 10, 1978 Orissa, India - 150 fatalities
Sarasota, Florida Tornadoes May 4, 1978 Florida - 3 fatalities (2 significant, 1 killer)
Red River Valley Tornado Outbreak April 10 - 11, 1979 Southern Great Plains - Southeastern U.S. - 56 fatalities Wichita Falls Tornado on 10th (28 significant, 2 violent, 5 killer)
Woodstock, Ontario Tornado of August 1979 August 7, 1979 Ontario - 2 fatalities Two F4s strike the City of Woodstock and surrounding farmland, at the same time.
Windsor Locks, Connecticut Tornado October 3, 1979 New England - 3 fatalities (2 significant, 1 violent killer)

Event	Date	Area	Tornadoes	Casualties	Notes
Buladelah, NSW, Australia Tornado	January 1, 1970	New South Wales, Australia	-	0 fatalities	Likely strongest Australian tornado
April 1970 Tornado Outbreak	April 17 - 18, 1970	Southern Great Plains	-	23 fatalities	(7 significant, 4 violent, 3 killer)
Lubbock Tornado	May 11, 1970	West Texas	-	28 fatalities	(1 violent killer)
Venice, Italy Tornado Outbreak	September 11, 1970	Italy	Several	≥40 fatalities
Mississippi Valley Tornado Outbreak of February 1971	February 21, 1971	Southern Mississippi Valley	-	119 fatalities	(4 killer)
Kin Kin, Queensland Tornado	August 14, 1971	Queensland, Australia	-	3 fatalities	Likely deadliest Australian tornado
Sudbury, Ontario Tornado of 1970	August 20, 1970	Ontario, Canada	-	6 fatalities	(1 killer)
Springfield, Missouri Tornado Outbreak of 1971	December 14 - 15, 1971	Central U.S.	40	2 fatalities	(10 significant, 2 killer)
Ameland Island, Netherlands Tornado	August 11, 1972	Friesland, Netherlands	-	7 fatalities, 90 injuries
[link] San Justo, Argentina Tornado	January 10, 1973	Buenos Aires Province, Argentina	-	54 fatalities, 350 injuries	Large, perhaps violent, tornado
Georgia - South Carolina Outbreak of March 1973	March 31, 1973	Georgia - South Carolina	-	10 fatalities	Extremely destructive tornadoes, costliest natural disaster in Georgia history (3 violent killers)
[link] Dhaka District, Bangladesh Tornado	April 17, 1973	Dhaka Division, Bangladesh	-	681 fatalities
May 1973 Tornado Outbreak	May 26 - 29, 1973	Southern U.S.	99	22 fatalities	(26 significant, 3 violent, 8 killer)
Brisbane, Queensland Tornado	November 4, 1973	Queensland, Australia	-	0 fatalities	Perhaps most destructive Australian tornado
Super Outbreak	April 3 - 4, 1974	Eastern U.S. - Ontario	148	315 fatalities	Largest and most intense recorded outbreak (95 significant, 30 violent (6 F5), 49 killer)
January 1975 Tornado Outbreak	January 9 - 10, 1975	Southeastern U.S.	47	11 fatalities	(9 significant, 1 violent, 3 killer)
Omaha Tornado of 1975	May 6, 1975	Nortern Great Plains	-	3 fatalities	(6 significant, 2 violent, 1 killer)
Canton, Illinois Tornado of 1975	July 23, 1975	Illinois	-	2 fatalities
Port Headland, Australia Tornado	December 17, 1975	Western Australia, Australia	-	-
March 1976 Tornado Outbreak	March 20 - 21, 1976	Mississippi Valley	66	3 fatalities	(18 significant, 3 violent, 3 killer)
South Africa, Trompsburg Tornado	November 5, 1976	Karoo	-	5+ fatalities	Longest path ever measured in SA, 175km, mostly through desert
Sandon, Australia Tornadoes	November 13, 1976	Victoria, Australia	3	2 fatalities
[link] Madaripur-Shibchar, Bangladesh Tornado	April 1, 1977	Dhaka Division, Bangladesh	-	500 fatalities
New Delhi, India Tornado of March 1978	March 17, 1978	National Capital Region, India	-	28 fatalities, 700 injuries
[link] Orissa, India Tornado	April 10, 1978	Orissa, India	-	150 fatalities
Sarasota, Florida Tornadoes	May 4, 1978	Florida	-	3 fatalities	(2 significant, 1 killer)
Red River Valley Tornado Outbreak	April 10 - 11, 1979	Southern Great Plains - Southeastern U.S.	-	56 fatalities	Wichita Falls Tornado on 10th (28 significant, 2 violent, 5 killer)
Woodstock, Ontario Tornado of August 1979	August 7, 1979	Ontario	-	2 fatalities	Two F4s strike the City of Woodstock and surrounding farmland, at the same time.
Windsor Locks, Connecticut Tornado	October 3, 1979	New England	-	3 fatalities	(2 significant, 1 violent killer)

Event Date Area Tornadoes Casualties Notes
Central US Tornado Outbreak of April 1980 April 7 - 8, 1980 Central U.S. - 3 fatalities (30 significant)
Grand Island, Nebraska Tornado Outbreaks June 2 - 3, 1980 Central - Eastern U.S. - 6 fatalities (15 significant, 1 violent, 3 killer; best known for forming three rare anticyclonic tornados in one system)
Hurricane Allen August 1980 Mexico - Texas ≥29 - Costliest tropical cyclone related tornado in history struck Austin vicinity
Moerdijk, Netherlands Tornado October 6, 1981 North Brabant, Netherlands - 17 fatalities NLM Cityhopper Flight 431 encountered tornado shortly after takeoff and crashed
Gwynedd - Humberside - Essex Tornado Outbreak November 21, 1981 UK 105 0 fatalities Largest known European outbreak though predominately weak tornadoes
April 1982 Tornado Outbreak April 2 - 3, 1982 Southern Plains - Mississippi Valley 61 29 fatalities (24 significant, 4 violent, 10 killer)
May 1982 Tornado Outbreak May 11 - 12, 1982 Texas - Oklahoma 70 2 fatalities (14 significant)
Marion, Illinois Tornado May 29, 1982 Illinois - 10 fatalities (2 significant, 1 violent killer)
Early-December 1982 Tornado Outbreak December 2 - 3, 1982 Lower-Middle Mississippi Valley - 4 fatalities (16 significant)
Christmas 1982 Tornado Outbreak December 23 - 25, 1982 Central - Southeastern U.S. - 3 fatalities (18 significant)
Early-May 1983 Tornado Outbreak May 1 - 2, 1983 Mississippi Valley - Great Lakes - 6 fatalities (22 significant, 5 killer)
Mid-May 1983 Tornado Outbreak May 18 - 20, 1983 Southeastern U.S. 48 6 fatalities (10 significant, 6 killer)
Carolinas Tornado Outbreak March 28, 1984 Carolinas - 57 fatalities (19 significant, 7 violent, 10 killer)
Philipp - Water Valley, Mississippi Tornado Outbreak April 21, 1984 Southeastern U.S. - 15 fatalities (3 significant)
Morris, Oklahoma Tornado Outbreak April 26 - 27, 1984 Great Plains - Mississippi Valley - 16 fatalities (20 significant, 8 killer)
Mannford - New Prue, Oklahoma Tornado Outbreak April 29, 1984 Central U.S. 42 1 fatality (4 significant, 1 violent killer)
May 1984 Tornado Outbreak May 2 - 3, 1984 Southeastern U.S. 60 5 fatalities (15 significant)
Barneveld, Wisconsin Tornado Outbreak June 7 - 8, 1984 Central U.S. 45 13 fatalities (26 significant, 2 violent, 4 killer)
Ivanova - Yaroslav, Russia Tornado Outbreak June 9, 1984 Western Russia - >400 fatalities
Maravilha, Brazil Tornado October 9, 1984 Maravilha, Brazil - 10 fatalities
US-Canadian Outbreak May 31, 1985 U.S. - Canadian Eastern Great Lakes - ≥88 fatalities Among most intense outbreaks recorded, largest recorded outbreak in the region (≥20 significant, 9 violent, ≥10 killer)
Hurricane Danny August 1985 Southeastern U.S. 39
Saragosa, Texas Tornado May 22, 1987 West Texas - 30 fatalities (1 violent killer)
Edmonton Tornado July 31, 1987 Alberta - ≥27 fatalities, ≥300 injuries Most destructive Canadian tornado (≥1 violent killer). Officially an F4, possibly Canada's first F5
May 1988 Tornado Outbreak May 8, 1988 Midwest 57 0 fatalities (8 significant)
South Africa, Senekal Tornado September 15, 1988 - - 2 fatalities Long track event
Hurricane Gilbert September 1988 Central - North America ≥29 -
November 1988 Tornado Outbreaks November 4 - 5, 15, 19 - 20, 28, 1988 Central - Eastern U.S. - 14 fatalities 44 tornadoes on Nov. 15, Raleigh Tornado on Nov. 28
[link] Daultipur-Salturia, Bangladesh Tornado April 26, 1989 Barisal Division, Bangladesh - >1300 fatalities Deadliest tornado in world history
SC-NC-VA Tornado Outbreak May 5, 1989 Mid-Atlantic - Southeast U.S. - 7 fatalities (9 significant, 3 violent, 3 killer)
Northeastern United States Tornado Outbreak July 10, 1989 Eastern New York and Western Connecticut - 0 fatalities (0 significant, 0 violent, 0 killer)
Huntsville, Alabama Tornado November 15, 1989 Southeastern U.S. - 21 fatalities (6 significant, 1 violent killer)
Montgomery, New York Tornado November 16, 1989 New York - 9 deaths, 18 injured Tornado hit elementary school cafeteria while students were having lunch

Event	Date	Area	Tornadoes	Casualties	Notes
Central US Tornado Outbreak of April 1980	April 7 - 8, 1980	Central U.S.	-	3 fatalities	(30 significant)
Grand Island, Nebraska Tornado Outbreaks	June 2 - 3, 1980	Central - Eastern U.S.	-	6 fatalities	(15 significant, 1 violent, 3 killer; best known for forming three rare anticyclonic tornados in one system)
Hurricane Allen	August 1980	Mexico - Texas	≥29	-	Costliest tropical cyclone related tornado in history struck Austin vicinity
Moerdijk, Netherlands Tornado	October 6, 1981	North Brabant, Netherlands	-	17 fatalities	NLM Cityhopper Flight 431 encountered tornado shortly after takeoff and crashed
Gwynedd - Humberside - Essex Tornado Outbreak	November 21, 1981	UK	105	0 fatalities	Largest known European outbreak though predominately weak tornadoes
April 1982 Tornado Outbreak	April 2 - 3, 1982	Southern Plains - Mississippi Valley	61	29 fatalities	(24 significant, 4 violent, 10 killer)
May 1982 Tornado Outbreak	May 11 - 12, 1982	Texas - Oklahoma	70	2 fatalities	(14 significant)
Marion, Illinois Tornado	May 29, 1982	Illinois	-	10 fatalities	(2 significant, 1 violent killer)
Early-December 1982 Tornado Outbreak	December 2 - 3, 1982	Lower-Middle Mississippi Valley	-	4 fatalities	(16 significant)
Christmas 1982 Tornado Outbreak	December 23 - 25, 1982	Central - Southeastern U.S.	-	3 fatalities	(18 significant)
Early-May 1983 Tornado Outbreak	May 1 - 2, 1983	Mississippi Valley - Great Lakes	-	6 fatalities	(22 significant, 5 killer)
Mid-May 1983 Tornado Outbreak	May 18 - 20, 1983	Southeastern U.S.	48	6 fatalities	(10 significant, 6 killer)
Carolinas Tornado Outbreak	March 28, 1984	Carolinas	-	57 fatalities	(19 significant, 7 violent, 10 killer)
Philipp - Water Valley, Mississippi Tornado Outbreak	April 21, 1984	Southeastern U.S.	-	15 fatalities	(3 significant)
Morris, Oklahoma Tornado Outbreak	April 26 - 27, 1984	Great Plains - Mississippi Valley	-	16 fatalities	(20 significant, 8 killer)
Mannford - New Prue, Oklahoma Tornado Outbreak	April 29, 1984	Central U.S.	42	1 fatality	(4 significant, 1 violent killer)
May 1984 Tornado Outbreak	May 2 - 3, 1984	Southeastern U.S.	60	5 fatalities	(15 significant)
Barneveld, Wisconsin Tornado Outbreak	June 7 - 8, 1984	Central U.S.	45	13 fatalities	(26 significant, 2 violent, 4 killer)
Ivanova - Yaroslav, Russia Tornado Outbreak	June 9, 1984	Western Russia	-	>400 fatalities
Maravilha, Brazil Tornado	October 9, 1984	Maravilha, Brazil	-	10 fatalities
US-Canadian Outbreak	May 31, 1985	U.S. - Canadian Eastern Great Lakes	-	≥88 fatalities	Among most intense outbreaks recorded, largest recorded outbreak in the region (≥20 significant, 9 violent, ≥10 killer)
Hurricane Danny	August 1985	Southeastern U.S.	39
Saragosa, Texas Tornado	May 22, 1987	West Texas	-	30 fatalities	(1 violent killer)
Edmonton Tornado	July 31, 1987	Alberta	-	≥27 fatalities, ≥300 injuries	Most destructive Canadian tornado (≥1 violent killer). Officially an F4, possibly Canada's first F5
May 1988 Tornado Outbreak	May 8, 1988	Midwest	57	0 fatalities	(8 significant)
South Africa, Senekal Tornado	September 15, 1988	-	-	2 fatalities	Long track event
Hurricane Gilbert	September 1988	Central - North America	≥29	-
November 1988 Tornado Outbreaks	November 4 - 5, 15, 19 - 20, 28, 1988	Central - Eastern U.S.	-	14 fatalities	44 tornadoes on Nov. 15, Raleigh Tornado on Nov. 28
[link] Daultipur-Salturia, Bangladesh Tornado	April 26, 1989	Barisal Division, Bangladesh	-	>1300 fatalities	Deadliest tornado in world history
SC-NC-VA Tornado Outbreak	May 5, 1989	Mid-Atlantic - Southeast U.S.	-	7 fatalities	(9 significant, 3 violent, 3 killer)
Northeastern United States Tornado Outbreak	July 10, 1989	Eastern New York and Western Connecticut	-	0 fatalities	(0 significant, 0 violent, 0 killer)
Huntsville, Alabama Tornado	November 15, 1989	Southeastern U.S.	-	21 fatalities	(6 significant, 1 violent killer)
Montgomery, New York Tornado	November 16, 1989	New York	-	9 deaths, 18 injured	Tornado hit elementary school cafeteria while students were having lunch

*Do not add anything here unless you know how to properly insert it into the table!!!!!**

Tornadoes rated F5

See List of F5 tornadoes

Tornado-related deaths at schools

See List of tornado-related deaths at schools

Most tornadoes spawned by hurricanes

See List of Atlantic hurricanes by most tornadoes spawned and History of tropical cyclone-spawned tornadoes

Tornadoes striking the downtown of major cities

See List of tornadoes striking downtown areas

References

Grazulis, Thomas P. (1993). Significant Tornadoes 1680-1991, A Chronology and Analysis of Events. St. Johnsbury, VT: The Tornado Project of Environmental Films. ISBN 1879362031
--- (1997). Significant Tornadoes Update, 1992-1995. ISBN 187936204X
--- (2001). The Tornado: Nature's Ultimate Windstorm. Norman, OK: University of Oklahoma Press. ISBN 0806132582
National Oceanic and Atmospheric Administration, National Climatic Data Center / Storm Prediction Center. Storm Data.

External links and sources

Significant events

[Websites Dedicated to Specific Tornado Events] (SPC, NOAA)
[World Wide Tornadoes] (Tornado Project)
[Major Canadian Tornadoes] (Environment Canada)
[European Tornado Extremes] (TORRO)
[German Weather Chronicle]

Tornado event data

[Preliminary storm (tornadoes, severe wind and hail) reports from June 1, 1999 to present; and severe storm climatology information] (SPC)
[Daily Severe Weather Report Archive from 1985-1999] (SPC)
[NCDC's searchable Storm Data database]
[Storm Data publication] (NCDC) (purchase required)
[STORM NEWS and Archives] (Sam Barricklow, K5KJ)
[Storm Report Map (SPC storm reports overlayed on Google Maps]
[European Climatology on Severe Storms] (University of the Balearic Islands)

Miscellaneous

[Online Severe Weather Climatology for weather radar coverage areas] (SPC)
[Severe Thunderstorm Climatology] (NSSL)
[The Tornado Project]
[NCDC Tornado Statistics and Data]
[Historical Tornado Data Archive, 1950-1999] (SPC)
[Tornadoes of Bangladesh and eastern India] by Jonathon D. Finch, M.S. (with additional global tornado information)
[Extreme Weather Source Book -- Economic and Other Societal Impacts Related to Hurricanes, Floods, Tornadoes, Lightning, and Other U.S. Weather Phenomena] (University of Colorado at Boulder)

Weather data archives

[Severe Thunderstorm Events] (SPC)
[Various] (NCDC)
[Various] (Plymouth State University)
[Radar and weather data] (McGill University)
[Satellite data] (University of Wisconsin-Madison)
[Upper air soundings] (University of Wyoming)

Canadian tornado information

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