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Flash Flood — Winona, MN

May 19, 2022

Two rounds of storms moved across southeast Minnesota on May 19th. The first occurred from late morning through the middle of the afternoon and produced primarily large hail across Mower and Olmsted Counties. The largest reported hail with this activity was ping pong ball sized near Lyle (Mower County), Adams (Mower County), south of Rochester (Olmsted County) and east of Rochester. The second round of storms also produced hail, although not as large as the earlier storms. The largest reported h

Source: NOAA National Weather Service Storm Events Database (event 1029776). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Winona, MN

This event is one of many recorded floods in Winona County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

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