It's one of the weirdest things we've seen in 2025's weather, so far. A winter tornado in one of America's coldest states. Here's what happened and why.

WATERTOWN, S.D. (KFGO KWAT) – South Dakota’s first-ever documented tornado in February will go down as an “EF-U” on the Fujita scale, which gives twisters a ranking from EF-0 to EF-5, based on their strength and wind speed.

Typically when a person thinks of February in either of the Dakotas, they don’t think of tornadoes. But that happened Monday outside of Watertown, South Dakota