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Rash of Severe Weather Promises Thunderstorms, Large Hail, Twisters

Dangerous storms packing large hail and potential tornadoes were bearing down on large swaths of the country on Monday, with forecasters warning of a bumpy week ahead.

Plains states got an initial taste of the severe-weather outbreak on Sunday. Hail nearly twice the size of a quarter was spotted in Nebraska — along with what appeared to be tornadoes.

On Monday, NBC News meteorologist Bill Karins warned that 13 million Americans could be in the path of severe storms. Large hail will be the primary concern but tornadoes also could be a possibility, according to forecasters.

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The Great Lakes area could see severe thunderstorms on Monday afternoon and evening — with Chicago and Milwaukee in the threat area, according to The Weather Channel. It said that damaging wind gusts, hail and isolated tornadoes could crop up.

The real focus for forecasters, however, will be Tuesday.

"A more extensive severe weather outbreak is expected Tuesday across portions of the Southern and Central Plains," according to The National Weather Service.

Severe thunderstorms are expected to hit the southern Plains, parts of Texas and the lower Mississippi Valley.

Tuesday's storms also were expected to produce potentially life-threatening tornadoes.

Scattered severe thunderstorms are expected in southern Nebraska, central Kansas, central Oklahoma and north-central Texas on Tuesday afternoon. The wacky weather is expected then to march eastward — with tornadoes, hail and damaging winds a possibility.

There'll be no respite on Wednesday, with southern Iowa to northeast Texas at risk of severe storms.