On February 10, 2009, eight people were killed and more than 40 people were injured when the EF4 tornado touched down just after sunset.

Iowa experienced one of the deadliest and most damaging tornado outbreaks we'd seen in years, including an EF4 tornado that touched down in Winterset, traveled over 70 miles in an hour and a half.

A Feb. 21-22, 1971 outbreak claimed 121 lives from Texas to North Carolina, the deadliest February rash of tornadoes in recent times. One F4 tornado near Oxford, Mississippi, killed 58 and injured 800 ...

In a dramatic introduction to Oklahoma, a University of Kentucky student recorded the moment an EF4 tornado passed over a hotel in Bartlesville, Oklahoma. According to Storyful, Murilo Damin ...

EF4 tornadoes leveled parts of Barnsdall, Oklahoma, and Greenfield, Iowa. In mid-July, two derechos ripped through parts of the Plains and Midwest. The second of those blasted portions of Iowa ...

“Fig. 1. Photograph of a thrown combine from the ground survey of the July 1, 2023, Didsbury, AB EF4 tornado” from Miller et al. (2024), "Estimating Wind Speeds in Tornadoes using Debris ...

Articles published early online in American Meteorological Society journals discuss weather associated with California wildfires, the "drought" of EF5 tornadoes, and U.S. locations at heightened risk ...

The 2024 tornadoes not only varied from the norm in their sheer number, but also their timing. Local residents walk among the debris May 22, 2024, from homes damaged by an EF4 tornado the day before.

Furthermore the US also has to face more violent tornadoes, those rated EF4 or EF5, than any other country. This is concerning for residents in storm hotspots and seems to be becoming increasingly ...