LACROSSE, Wis. – Scattered but heavy thunderstorms could mean flash floods in coulees and up tributary streams to the Mississippi, the National Weather Service warned. Unlike the Mississippi flooding, with water rising only inches at a time, flash floods are sudden and can wipe out roads unexpectedly. Forecasters advised people to consider alternate escape routes and to stock up on three days of essential goods in case they are stranded at home.
Earlier: Almanac: River crests at Winona