Dangerous spring storms threaten millions in US [Video]

(The Hill) — A band of unseasonable spring storms is set to dump snow on much of the upper Midwest and Northeast and bring a significant threat of tornadoes to the Ohio and Mississippi River valleys starting Tuesday, putting millions of Americans at risk of severe weather.

The National Weather Service (NWS) declared a level 4 of 5 risk of severe storms over much of Ohio, Kentucky and Tennessee on Tuesday, warning of high winds and the risk of hail and tornadoes. 

The most severe risk is along the Ohio River valley between Cincinnati and Louisville, the agency said. Storms in the region began Monday evening and are anticipated to continue throughout the day.

“The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes,” the NWS said early Tuesday. “In addition, there is an increased threat of EF2 to EF5 tornados over parts …