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Worldwide during the 2020s, 21 tornadoes have been rated F4/EF4/IF4. Nineteen of these tornadoes occurred in the United States, receiving EF4 ratings, one occurred in Canada, and one F4/IF4 occurred in the Czech Republic. [note 1] These tornadoes have caused 136 fatalities and over 1,183 injuries. The most recent EF4 tornado occurred on May 21 ...
At least four people were killed and 35 injured by an EF4 tornado that plowed through the center of Greenfield, Iowa, on Tuesday. Peak winds of 185 mph were estimated by the National Weather ...
2008 Parkersburg–New Hartford tornado, the most recent EF5 tornado in Iowa; List of F4 and EF4 tornadoes (2020–present) 2022 Winterset tornado, another EF4 tornado that struck a nearby area of Iowa two years prior; 2023 Rolling Fork–Silver City tornado, another EF4 tornado that struck Mississippi at a similar intensity the year prior
A wedge EF4 tornado impacting the town of Elkhorn, Nebraska. EF4 damage to a residence from the 2011 Tuscaloosa–Birmingham tornado The Windsor–Tecumseh Tornado of 1946 F4/EF4 Tornadoes in the United States 1950–2019. This is a list of tornadoes which have been officially or unofficially labeled as F4, EF4, IF4, or an equivalent rating.
NWS: Reports show tornadoes ran 130 miles The National Weather Service on Thursday classified the Greenfield tornado as an EF4 , and designated a tornado in the southwest Iowa counties of Page ...
At least 25 people were killed by violent tornadoes that touched down in Mississippi on Friday night, according to the state's emergency management agency. The twisters left behind total ...
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]
The Greenfield tornado has been rated EF4 strength by the National Weather Service in Des Moines, with the office noting that "further refinement is possible in the days to come."