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.

The National Weather Service warned thunderstorms are likely Monday across central and eastern Minnesota, with the possibility of hail and tornadoes.

Storms with lightning and hail and at least one observed tornado were moving through the upper Midwest Monday with the potential for strong tornadoes. The National Weather Service said the highest risks — a 4 on a scale of 1 to 5 — were in portions of southern Minnesota,

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. Forecasters warn that storms moving into the area this evening could bring large hail,

Monday is probably the peak, but a storm risk shifts eastward Tuesday. Cities in the highest risk for tornadoes include Minneapolis and Rochester in Minnesota.

The severe weather threat is slated for Tuesday, April 29, and Wednesday, April 30, according to The First Alert Weather Team at CBS News Texas.