You're all familiar with the Enhanced Fujita Scale or EF Scale, which became operational on February 1, 2007, is used to assign a tornado a 'rating' based on estimated wind ...

The thunderstorms on July 28 produced two damage-causing tornadoes in South Dakota, and a third in Iowa, according to the National Weather Service.

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EFU stands for Enhanced Fujita Unknown, meaning that the damage is too minimal to determine a rating or there's no assessable damage.

NWS teams have assigned preliminary tornado ratings based on damage for three confirmed tornadoes: West of Valley City, North Dakota: at least EF-3 South of Valley City, North Dakota: at least EF-2 ...

FRANKFORD, Del. - A survey team from the National Weather Service in Mount Holly, N.J. assigned an EF-0 rating to the June 30 Frankford tornado in its first report Wednesday afternoon.

One tornado was deadly, killing three people in rural Enderlin, ND. Intense straight-line winds, clocked as high 111 mph and estimated up to 120 mph caused extensive damage in many areas.

Iowa has experienced a significant decrease in tornado activity this year compared to 2024.While the state typically averages ...