FloodZoneMap.org

Flash Flood — Milwaukee, WI

Sep 11, 2000

Three rounds of severe thunderstorms affected parts of south-central and southeast Wisconsin on September 11, 2000:1) The 1st round consisted of a cluster of storms that produced damaging straight-line winds in Walworth County. Several reports of toppled large trees originated from the Whitewater to La Grange area down to the Richmond area.2) The second round started off as a cluster of storms over northeast Iowa which moved into southwest Wisconsin. This cluster transformed into a solid line o

Source: NOAA National Weather Service Storm Events Database (event 5156665). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Milwaukee, WI

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

View Milwaukee County flood data →

More Flood Stories

Flood3 deaths

Milwaukee, WI · Jun 13, 2022

A supercell thunderstorm formed north of a warm front and tracked east across much of southern WI. A swath of destructive hail and sporadic wind damage occurred. More specifically, vehicle, shingle, siding, gutter, and window screen damage.

Read the full account →
Flash Flood1 death$60.0M damage

Milwaukee, WI · Aug 9, 2025

A historic flash flood and record rainfall occurred over portions of the Milwaukee Metropolitan Area and Southeast WI resulting in damages in the $100s Millions.

Read the full account →
Flash Flood1 death$24.1M damage

Milwaukee, WI · Jul 22, 2010

Parts of south-central and southeast Wisconsin experienced several rounds of record-setting torrential heavy rains during the afternoon and evening hours of July 22, 2010 that led to flash flooding and damage.

Read the full account →
Flash Flood$5.8M damage

Milwaukee, WI · Aug 10, 2025

A historic flash flood and record rainfall occurred over portions of the Milwaukee Metropolitan Area and Southeast WI resulting in damages in the $100s Millions.

Read the full account →