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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.
The DOW documented the largest-ever-observed core flow circulation with a distance of 1,600 m (5,200 ft) between peak velocities on either side of the tornado, and a roughly 7 km (4.3 mi) width of peak wind gusts exceeding 43 m/s (96 mph), making the Mulhall tornado the largest tornado ever measured quantitatively. [3] 1946 Timber Lake tornado
Prior to 1950 in the United States, only significant tornadoes are listed for the number of tornadoes in outbreaks. Due to increasing detection, particularly in the U.S., numbers of counted tornadoes have increased markedly in recent decades although the number of actual tornadoes and counted significant tornadoes has not. In older events, the ...
Here are the top 10 deadliest tornadoes to strike in the United States, according to the Storm Prediction Center. On March 18, 1925, the deadliest tornado in U.S Top 10 deadliest tornadoes in US ...
Traveled 122.91 miles (197.80 km) and peak width of 1,030 yd (940 m). Second longest-tracked tornado of the December 10-11 outbreak. Lasted 2 hours and 4 minutes, staring from December 10th to the 11th (10:32 CDT to 12:36 CDT) [43] Tornado outbreak of December 10–11, 2021: 140 mph (230 km/h) December 11, 2021 0 Kentucky: NWS
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]
With 55 tornadoes in 2024 as of Thursday, Iowa has seen the most tornadoes this year. A graphic from AccuWeather depicting the number of tornadoes each state has seen so far in 2024.
Here are 10 different types of tornadoes that have been documented across North America. The smallest type of tornado can be short-lived, lasting just a few minutes, but that is not always the case.