Flash Flood Warnings Extended Across Southern Wisconsin – Milwaukee, Waukesha, Ozaukee, and Washington Counties Impacted

Flash Flood Warnings Extended Across Southern Wisconsin – Milwaukee, Waukesha, Ozaukee, and Washington Counties Impacted

Milwaukee, WI – The National Weather Service (NWS) has extended Flash Flood Warnings for multiple counties in southern Wisconsin, including Milwaukee, Waukesha, Ozaukee, and Washington, as severe thunderstorms continue to dump heavy rainfall across the region.

Latest Updates – August 10, 2025

• 3:30 a.m. Update:
  Storms impacting the Milwaukee metro area are now moving northeast. Heavy rainfall continues to cause street flooding and possible flash flooding, creating hazardous travel conditions.

• 2:45 a.m. Update:
  A Flood Warning has been issued for the Kinnickinnic River in Milwaukee, where water levels have reached 16.6 feet – about 2 feet above the concrete-lined channel. Major flooding is affecting homes in nearby neighborhoods.

• 1:40 a.m. Update:
  Flash Flood Warnings extended to Ozaukee and Washington Counties until 5:30 a.m. Radar and rain gauges recorded 1–3 inches of rain, with an additional 1.5–3 inches possible. Flash flooding is expected in creeks, streams, urban areas, highways, and low-lying spots.

• 1:20 a.m. Update:
  Flood Warnings for Milwaukee and Waukesha Counties remain “until further notice.”

  • Menomonee River in Wauwatosa has overflowed, reaching 11 feet (banks usually at 8 feet).

  • Fox River in Waukesha has water levels 7 feet over banks, flooding Frame Park and nearby homes with 2–3 feet of water.

• 1:10 a.m. Update:
  Flash Flood Warning for Milwaukee and Waukesha Counties extended until 5:00 a.m. Heavy rain of 3–6 inches already fallen, with 1–2 inches more possible. Numerous reports of street flooding, stranded vehicles, and basement flooding have been received.

• Earlier Alert – 8:04 p.m., August 9:
  Initial warnings were issued as 1–1.5 inches of rain fell, with rainfall rates of 1–2 inches per hour predicted.

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Safety Precautions

• Avoid driving through flooded streets – most flood-related deaths occur in vehicles.

• Stay alert at night when flood dangers are harder to see.

• Move to higher ground if you are in a flood-prone area.

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