Several cold fronts are poised to move across the the Upper Midwest Friday into the weekend. Severe weather and flash flooding will be possible with the storms.
The first cold front arrives on Friday bringing all severe weather modes. The primary threats will be damaging winds and large hail that could be larger than egg sized hail. With the afternoon heating, severe storms will begin to erupt across parts of Minnesota and South Dakota. Models are showing the best chance for storms will come across the Arrowhead of Minnesota.
Saturday, the severe threat slides south along the Interstates 70 and 80 corridor. The timing of the severe storms will be Saturday morning into the afternoon hours. The main threats will be wind and hail.
A new low develops along Saturday's stalled front and more strong to severe storms will be possible Sunday and Monday. I think Sunday will be highlighted. SPC has highlighted a severe risk for Monday across Nebraska and Iowa. Following the front, temperatures are expected to cool down some heading into next week.

With the repeated rounds of thunderstorms, heavy rain will be likely across the Upper Midwest. One model suggests rainfall totals could average between 3-6 inches. Flooding will be a talker next week too! 