Expected thunderstorms have fired this morning in northwestern parts of the Corn Belt, and when one combines those rains with rains that fell during the day yesterday, we have seen some locally heavy rainfall totals of two inches or more for southeastern South Dakota and parts of northwestern Iowa (and several counties there were under flash flood warnings early on this Friday).

This activity will tend to weaken after sunrise this morning as it moves to the east or a bit to the southeast, with fresh thunderstorms possible for this afternoon and tonight anywhere over the western two-thirds of the Corn Belt (stronger thunderstorms targeting the Missouri River Valley). We may not see all that much rain around the Midwest for the weekend, but by Monday morning there will likely be new thunderstorms into the northwestern Corn Belt.