Flash flood warning issued Sunday for southeastern Wisconsin counties
National Weather Service issues flash flood warning for parts of Dodge, Washington, and Waukesha counties until noon CDT Sunday
THIS IS A SEVERE WEATHER UPDATE. GOOD SUNDAY MORNING METEOROLOGIST MOLLY BERNARD HERE INTERRUPTING UPFRONT REAL QUICK BECAUSE WE JUST GOT A NEW FLASH FLOOD WARNING INTO THE NEWSROOM. IT’S THIS LONG ONE IN WESTERN PORTIONS OF WAUKESHA COUNTY. THIS INCLUDES PORTIONS OF DODGE COUNTY AND PARTS OF WASHINGTON COUNTY. THIS IS THE POTENTIAL FOR MORE STREET FLOODING, FOR MORE RIVER FLOODING, BECAUSE OF MORE HEAVY RAIN THAT IS MOVING THROUGH SOUTHEASTERN WISCONSIN ON AREAS THAT HAVE SEEN A LOT OF RAIN JUST IN THE LAST COUPLE OF HOURS. OCONOMOWOC ONE OF THE AREAS IN THAT WARNING, 68 DEGREES DOESN’T LOOK LIKE THERE’S ANY ISSUES ON THE ROADS THERE. YOU CAN SEE THE THE THE CAR LIGHTS STARTING, THE HEADLIGHTS SHINING ON THE WATER AND SOME HEAVY RAIN FALLING HERE IN PEWAUKEE AS WELL. THIS IS A FROZEN IMAGE, BUT A LOT OF WATER AROUND SOUTHEASTERN WISCONSIN. WE’RE NOT SEEING TOO MUCH IN TERMS OF FLOODING FROM THOSE TWO CAMERAS, BUT WHEN CONDITIONS ARE LIKE THIS, CONDITIONS CAN CHANGE VERY QUICKLY. THAT’S WHAT WE SAW DURING THE OVERNIGHT HOURS, A LITTLE BIT CLOSER TO WAUKESHA AND MILWAUKEE LAST NIGHT. AND IT’S SOMETHING TO BE AWARE OF, NOT JUST RIGHT NOW, BUT UNFORTUNATELY, AS WE HEAD THROUGH THE ENTIRE DAY TODAY, HERE’S OUR CAMERA OUT OF BROOKFIELD. THE AFTERMATH OF THE REALLY HEAVY RAIN THAT FELL AND FELL IN MILWAUKEE AND WAUKESHA COUNTIES EARLIER. HERE’S THAT FLASH FLOOD WARNING. AS YOU CAN SEE IN WESTERN WAUKESHA COUNTY, THAT JUST POPPED IN. IT’S SOME HEAVY RAIN NOW THAT’S MOVING THROUGH IN IT’S AREAS THAT HAVE PICKED UP A LOT OF RAIN. IT’S BEEN RAINING THERE FOR THE LAST COUPLE OF HOURS NOW. THE BIG THING THAT WE’RE GOING TO HAVE TO KEEP AN EYE ON OVER THE NEXT FEW HOURS IS HOW THIS RAIN NEAR MUKWONAGO AND DOWN NEAR DELAVAN. DELAVAN CONTINUES TO DEVELOP AND MOVE BECAUSE IF IT MOVES IN TO SOUTHERN WAUKESHA COUNTY, IF IT MOVES INTO MILWAUKEE COUNTY, THOSE ARE SOME OF THE AREAS THAT PICKED UP SOME OF THE MOST IMPRESSIVE RAINFALL TOTALS THROUGH THE OVERNIGHT HOURS, AND IT’S NOT GOING TO TAKE MUCH MORE WATER TO CAUSE SOME PRETTY BIG ISSUES IN THOSE AREAS THROUGH THE DAY. TODAY, RAINFALL TOTALS FOR A LOT OF US, TOPPING 8 OR 9IN IN SOME PLACES, MORE THAN TEN INCHES. SO IT’S A SITUATION THAT WE’RE GOING TO KEEP A REALLY CLOSE EYE ON. FLASH FLOOD WARNINGS IN WESTERN WAUKESHA, THE REST OF WAUKESHA AND ALL OF MILWAUKEE COUNTY UNDER FLOOD WARNINGS. WE HAVE MORE RAIN ON THE WAY, ON AND OFF HEAVY AT TIMES THROUGH THE DAY TODAY, WITH A FLOOD WATCH IN EFFECT FOR THE ENTIRE AREA NOW INTO MONDAY MORNING, STAY HERE WITH WEATHER WATCH 12. WE ARE GOING TO KEEP YOU UPDATED. WE’LL BE ON ABOUT EVERY HALF AN HOUR AS WE HEAD THROUGH THE DAY TODAY. AS THE SITUATION CONTINUES TO DEVELOP, WE SEE THAT THREAT FOR MORE FLOODING, STREET FLOODING, FLASH FLOODING, AND RIVER FLOODING ACROSS THE AREA. STAY SAFE. STAY OFF OF FLOODED ROADS. IF YOU CAN STAY HOME, THAT’S GOING TO BE THE PLACE TO BE TODAY. BUT WE ARE TRACKING MORE RAIN MOVING ACROSS THE AREA RIGHT NOW AND MORE RAIN CHANCES THROUGH TOMORROW MORNING. AGAIN, STAY TUNED TO WEATHERWATCH 12. WE WILL KEEP YOU UPDATED, BUT FOR NOW WE’RE GOING TO GO AHEAD AND SEND IT B
Flash flood warning issued Sunday for southeastern Wisconsin counties
National Weather Service issues flash flood warning for parts of Dodge, Washington, and Waukesha counties until noon CDT Sunday
Updated: 9:12 AM CDT Aug 10, 2025
Severe thunderstorms have triggered flash flooding across portions of southeastern Wisconsin, prompting the National Weather Service to issue a flash flood warning. The alert, issued at 8:55 a.m. Sunday, Aug. 10, remains in effect until noon for southeastern Dodge County, southwestern Washington County, and western Waukesha County.Doppler radar and automated rain gauges detected between 1 and 2.5 inches of rainfall, with an expected rate of 1 inch per hour. Officials warn that additional rainfall of 1 to 2 inches is possible in the affected areas.”Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas” is expected, according to the National Weather Service in Milwaukee/Sullivan.The warning encompasses several communities including Waukesha, Hartford, Pewaukee, Hartland, Mukwonago, Delafield, Wales, Okauchee Lake, Oconomowoc, and surrounding areas.Officials emphasize that most flood deaths occur in vehicles and urge drivers to avoid flooded roads.
MILWAUKEE —Severe thunderstorms have triggered flash flooding across portions of southeastern Wisconsin, prompting the National Weather Service to issue a flash flood warning.
The alert, issued at 8:55 a.m. Sunday, Aug. 10, remains in effect until noon for southeastern Dodge County, southwestern Washington County, and western Waukesha County.
Doppler radar and automated rain gauges detected between 1 and 2.5 inches of rainfall, with an expected rate of 1 inch per hour. Officials warn that additional rainfall of 1 to 2 inches is possible in the affected areas.
“Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas” is expected, according to the National Weather Service in Milwaukee/Sullivan.
The warning encompasses several communities including Waukesha, Hartford, Pewaukee, Hartland, Mukwonago, Delafield, Wales, Okauchee Lake, Oconomowoc, and surrounding areas.
Officials emphasize that most flood deaths occur in vehicles and urge drivers to avoid flooded roads.
