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 the state per decade.

The nation's longest "drought" between EF5 tornadoes has come to an end, scientists from the National Weather Service announced.

The d eadly tornado that struck Enderlin, North Dakota, in June has been classified as an extremely rare EF-5 storm, the first to hit the United States in 12 years. After a tornado strikes, the NWS conducts a survey to determine the storm's strength by analyzing the damage and determining if a tornado actually touched down.

The Enderlin tornado on June 20 was classified as an EF-5 with estimated winds up to 266 mph, making it one of the strongest tornadoes in U.S. history.

ROCHESTER, N.Y. – A recent reanalysis shows a powerful tornado, which struck in June near Enderlin, North Dakota, has officially been upgraded to an EF-5 on the Enhanced Fujita Scale. This is the highest possible rating and an exceptionally rare event in the United States.

No injuries or deaths were reported, but all three tornadoes caused damage to trees, power lines and at least one home, the NWS said.

The National Weather Service now says there were 5 tornadoes in central Massachusetts during Saturday's storm.

Severe weather outbreaks can happen almost anywhere in the U.S., including the Desert Southwest. Here's what happened in this two-day outbreak in 2010.

The National Weather Service confirmed that three tornadoes touched down in Tangipahoa Parish on Monday morning.