National Weather Service United States Department of Commerce

Isolated to scattered thunderstorms will spread northeast into mainly northwest and central Iowa late this afternoon and into the evening. Some of the storms could produce hail up to 2 inches in diameter, and wind gusts up to 75 mph. If outdoors this evening, make sure you have at least 2 methods to receive possible warnings.
Saturday evening into Sunday morning will bring another round of strong to severe thunderstorms across the area. Some storms will be capable of producing wind gusts up to 60 mph and hail up to 2 inches in diameter. Most of the activity should occur between 9 pm and 5 am, but the whole round could start as early as 6 pm and last through 7 am Sunday. Greater severe risks will be south of Interstate 90. Since many of these storms will occur after dark, ensure you have a method of receiving warnings that will wake you up.