Flood Inundation Mapping Fact Sheet

Flood Inundation Mapping (FIM) was rolled out across much of the country on September 03, 2025. These FIM services include much of Minnesota and Wisconsin. For more information, please visit the Office of Water Prediction. Read More >

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This "Day in Weather History" contains some memorable weather events and trivia from 1805 to the present day for much of Minnesota and west central Wisconsin. Many sources were used to research and compile the data. The Twin Cities/Chanhassen National Weather Service would especially like to thank the Minnesota State Climatology Office and its contributors for their input into this database.

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NWS Twin Cities - This Date in Weather History