Ozaukee, Waukesha and Milwaukee counties, among others, could get some hazardous weather this week.
Get your umbrellas and sump pumps ready, there could be some heavy rain on the way. The National Weather Service says there could be scattered or numerous thunderstorms across southeastern Wisconsin on Monday and Tuesday, and there is a slight risk for severe storms on both days. In some parts of the region, there could be large hail and damaging winds on Monday, and there is a threat of tornadoes on Tuesday as a low-pressure area moves through Minnesota and drags a cool front through southern Wisconsin that will increase the atmospheric wind shear, the service says. Isolated thunderstorms are also possible on Wednesday.