A storm will move closer to the Great Lakes on Monday, bringing a chance for severe weather to southern Canada through Missouri.
The same system that brought severe thunderstorms and tornado reports to North Dakota on Sunday will make its way eastward to start the workweek.
By the afternoon, strong, and even severe thunderstorms will stretch from Thunder Bay in southern Ontario to Minneapolis, Minn. and La Crosse, Wis., to northern Iowa, including Mason City.
The primary threats as these storms move through will be damaging wind gusts and large hail. Storms also have the potential to bring torrential downpours that could inhibit travel.
However, an isolated tornado cannot be ruled out. The greatest risk for tornadoes extends from northern Wisconsin, north of Wausau into the Upper Peninsula of Michigan to Thunder Bay.
Storms will likely be most severe in the afternoon and evening as the storms move eastward and threaten even more cities. Affected areas from the evening, into the overnight, include Madison, Wis., Cedar Rapids, Iowa and Kansas City. Chicago also could have a gusty storm.
Again, the primary threat will be hail and gusty, damaging winds.