SIOUX CITY -- Forecaster say areas close to Sioux City will likely escape the worst of the storms tonight, but areas southeast of the metro area could see heavier rains and possibly severe weather.

This is the third F-5/EF-5 in the state of North Dakota since records started being kept in 1953. Violent (EF-4 and EF-5) tornadoes are a very rare occurrence in the state, with only 1-2 occurring in ...

A deadly tornado that ripped through a rural city in North Dakota in June has been upgraded to an EF-5, the National Weather Service said Monday, marking the first U.S. twister with an EF-5 rating in ...

A deadly tornado that tore across southeastern North Dakota this summer has been upgraded to an EF5 with winds topping 200 mph (322 kph), the strongest classification of tornado and the first ...

A deadly tornado that tore across North Dakota this summer has been upgraded to an EF5 with winds over 200 mph, the strongest classification of tornado and the first on American soil in 12 years, ...

Thunderstorms expected to develop in the late afternoon on July 28 could combine to form a derecho over eastern South Dakota, according to the National Weather Service's Weather Prediction Center. The ...

SIOUX FALLS, S.D. (KELO) — A significant outbreak of severe weather struck KELOLAND last night. Severe winds, large hail, and tornadoes were all reported in the region. Latest forecast and damage ...

SIOUX FALLS, S.D. (KELO) – Severe weather hit KELOLAND, with tornadoes touching down in the Watertown area on Sunday. Viewers have shared photos of the intense tornado on the ground. If you take ...

A deadly tornado that tore across southeastern North Dakota this summer has been upgraded to an EF5 with winds topping 200 mph, the strongest classification of tornado and the first on American soil ...