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The deadliest tornado outbreak sequence in American history. Killer tornadoes touched down from Texas to Pennsylvania. Produced at least three F5 tornadoes and several F4s, including an F4 that killed at least 255 people and injured 1,236 in the St. Louis area. In Sherman Texas on May 15, one of the most intense tornadoes of the 19th century ...
One of the deadliest and costliest tornadoes in Canadian history. The number of casualties was most likely higher. 1985 Barrie tornado: Bouctouche, New Brunswick: 1879 August 6: 8 F3 Anywhere between 5 and 8 fatalities have been reported, “many” others were injured. This is the easternmost strong tornado ever to occur in North America.
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Significant events. Websites Dedicated to Specific Tornado Events (SPC, NOAA) World Wide Tornadoes (Tornado Project) UK/European Tornado Extremes Archived 2015-08-02 at the Wayback Machine ; Tornadoes in Germany (in German) Tornado Map (German Project / Map Worldwide) Tornadoes in Brazil
The 2011 Super Outbreak was the largest tornado outbreak spawned by a single weather system in recorded history; it produced 367 tornadoes from April 25–28, with 223 of those in a single 24-hour period on April 27 from midnight to midnight CDT, [4] [11] fifteen of which were violent EF4–EF5 tornadoes. 348 deaths occurred in that outbreak, of which 324 were tornado related.
In late 2023, American meteorologist and tornado expert Thomas P. Grazulis created the Outbreak Intensity Score (OIS) as a way to rank tornado outbreaks. [1] [2] For the score, only significant tornadoes are counted: F2/EF2 tornadoes receive 2 points each, F3/EF3 tornadoes receive 5 points each, F4/EF4 tornadoes receive 10 points each, and F5/EF5 tornadoes receive 15 points each. [1]
This article's lead section may be too long. Please read the length guidelines and help move details into the article's body. (August 2024) Tornadoes in the United States 1950-2019 A tornado strikes near Anadarko, Oklahoma. This was part of the 1999 Oklahoma tornado outbreak on May 3, 1999. Tornadoes are more common in the United States than in any other country or state. The United States ...
Worst theater fire in American history; worst single-building fire. 600 1928 St. Francis Dam: Accident – dam failure Santa Clarita, California: 581 1947 Texas City disaster: Accident – explosion Texas City, Texas: Ammonium nitrate on board ship 501+ 1896 Tornado outbreak sequence of May 1896: Tornado outbreak sequence