Rounds of heavy rainfall and thunderstorms are possible for parts of the Midwest. Damaging winds and a few tornadoes are possible through Saturday night in parts of Iowa, Illinois, Michigan and Wisconsin, including in cities like Des Moines and Milwaukee and Madison, Wisconsin. Rainfall is expected to continue and totals this weekend could approach 5 inches in some areas. More thunderstorms could return on Sunday in the Central Plains. Here’s what you should know.