According to the National Weather Service, a tornado was observed near Fairmont, Minnesota on Monday afternoon. The federal agency says there have also been reports of quarter-sized hail dropping in Le Sueur County.

"It is worth repeating - Monday is likely to be a dangerous weather day," says the National Weather Service in the Twin Cities.

A tornado watch is in effect for parts of northern Texas until 11 p.m. Monday, according to the National Weather Service (NWS) in Fort Worth.

In the afternoon and evening, isolated storms could become intense fast, with very large hail, destructive wind gusts and even tornadoes possible. Southeastern Minnesota, including the Twin Cities, is under a moderate risk for severe weather.

More than 36 million Americans are on alert for severe weather in the Upper Midwest, with thunderstorms, large hail and a tornado outbreak possible starting Monday.

The FOX Forecast Center is monitoring the development of a likely tornado outbreak across portions of the Upper Midwest on Monday, with millions of people in cities like Minneapolis on alert for severe weather.

The severe weather threat extends beyond the Upper Midwest, affecting more than 45 million people from Texas to the U.S.-Canada border.

A Tornado Warning has been issued for east central Ocean County in New Jersey until 6 p.m. Saturday. The National Weather Service says a severe thunderstorm capable of producing a tornado was located over Beachwood or near Toms River around 5:30 p.

The National Weather Service issued a tornado warning for East central Ocean County until 6 p.m. According to the National Weather Service, a severe thunderstorm was located near Toms River at 5:31 p.