Tornadoes, thunderstorms possible across Minn.

The National Weather Service says there's a chance for severe weather in Minnesota Sunday before storms move east into Wisconsin later in the day.

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Meterologist Matt Friedlein said an early spring system is causing wide temperature swings across the state. Central and southern Minnesota will see temperatures climb to the high 70s while in the north, temperatures will hover in the 40s in the afternoon and then drop into the 30s by the evening.

Friedlein said those temperature differences will likely cause thunderstorms.

"The thunderstorms that do develop do have a high potential of becoming severe," Friedlein said. "They will be capable of large hail and damaging winds and some tornadoes. The tornado threat is highest in Wisconsin, but it does include southeast and eastern Minnesota as well."

Friedlein said Sunday's storms probably won't have an impact on flooding in southern Minnesota. The Red River Valley, however, may see half an inch of rain into the evening. That will likely prolong the Red River's crest in the Fargo-Moorhead area by a few days. The river crested Saturday.