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Flood in Winona County, Minnesota

Flood August 19, 2007 – August 21, 2007 · Winona County, Minnesota

$1.5M
Damage as recorded
$250K
Crop damage

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Law enforcement officials reported some roads and bridges washed out or still under water. Whitewater State Park remained closed. In Goodview, extensive damage occurred to homes and apartments due to flood waters. All or portions of highways still closed included Highway 76 from Interstate 90 to Highway 16.

The wider storm

A warm front lifting northward into Iowa triggered round after round of thunderstorms with excessive rainfall across southeast Minnesota during the evening and overnight hours of August 18-19. This was after rain had fallen earlier in the day. Total rainfall amounts of 10 to 15 inches were common, which produced widespread and significant flash flooding. An official rainfall total of 15.1 inches near Hokah (Houston County) established an all-time 24 hour rainfall record for the state of Minnesota. Other rainfall totals, which were unofficial readings, included 17.00 and 14.00 inches respectively in Witoka and Utica (Winona County). Numerous roads and bridges were washed out, houses collapsed due to mudslides and hundreds of homes had flooded basements. Law enforcement and fire department officials reported rescuing people from their vehicles, as well as from house tops. There were seven fatalities reported, five in Winona County and two in Houston County. Damage attributed to the heavy rainfall and subsequent flooding was estimated to be in the millions of dollars. Fillmore, Houston, Olmsted, Wabasha and Winona counties were declared federal disaster areas.

Began near Winona (44.0500, -91.6500).

Source: NOAA Storm Events Database, event 50780. Narratives are written by the National Weather Service forecast office that issued the report.

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