Widespread severe weather expected Sunday and Monday

An active period of severe weather continues across the eastern half of the United States as another strong low-pressure system winds up to end the weekend.

While the storm produces a full-blown blizzard across parts of the Upper Midwest and the Great Lakes, plenty of unstable air and wind shear will create a multi-day severe thunderstorm threat on the southern side of the system.

Sunday's severe weather threat stretches from southeastern Texas to northern Michigan, with the greatest risk centered on the Mississippi River valley as a squall line sweeps through the region.

The predominant threat through the day Sunday will be damaging wind gusts, some of which could exceed 70 mph. A few strong tornadoes and some large hail are also possible, especially in any storms that form independent of the main squall line.

We'll see the risk for severe weather renew on the East Coast during the day Monday. Storms here will arrive in two rounds.

Supercell thunderstorms are possible in the enhanced risk zone on Monday afternoon, which will be capable of producing tornadoes, damaging winds, and large hail. 

A squall line will sweep in behind those initial storms, posing a risk for damaging winds and a few embedded tornadoes.

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