Thunderstorms early Tuesday morning, then again later in the day
Shower and thunderstorm activity is picking up in northwest Iowa as of Monday evening, and will be moving through northern MN and southern IA overnight. There will be some rumbles of thunder and areas of heavy rain, and possibly some small hail. It’s not likely to be severe, but it will be enough to wake you up in the middle of the night.
Another round will push through Tuesday afternoon to evening. This chance of rain looks more probable in southern Minnesota than northern Iowa with a marginal risk of severe weather. If any storms do get particularly strong, hail is the primary severe threat. We’ll catch a break from stormy weather on Wednesday with just a few, stray showers possible. Heavy rain still looks on track for Thursday, which will be followed by some chilly, Canadian air that will stick around for awhile.