National Weather Service United States Department of Commerce

A weak front will move east thru northeast North Dakota and northwest Minnesota at the time of peak heating Friday. Thunderstorms are possible along this front, with scattered severe storms possible (level 2 out of 5). Main hazards are hail to golf balls and winds to 70 mph, though an isolated tornado is possible. Storms may struggle to form with this front though due to warm layer (cap) aloft.
Temperatures are on their way up, peaking Sunday. We do have a chance for thunderstorms Friday mid to late afternoon and evening as a weak front moves through. But a warm layer aloft may prevent development. If any storms would form they may quickly become severe. Separate graphic and post shows the area where severe storms may develop.