Wisconsin Severe Flash Flood Warning | Effective 07/01/2026 21:20

Headline: 
Flash Flood Warning issued July 1 at 11:20PM CDT until July 2 at 1:45AM CDT by NWS Green Bay WI
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 1, 2026 - 9:20pm
Expires: 
July 1, 2026 - 11:45pm
Description: 
At 1120 PM CDT, local law enforcement reported thunderstorms producing heavy rain across the warned area. Between 2 and 2.5 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Law enforcement reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include... Appleton, Menasha, Kaukauna, Little Chute, Kimberly, Darboy, Northern Lake Winnebago, Neenah, Greenville, Combined Locks, Wrightstown, Holland and Uw Fox Valley.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads.
Area Description: 
Brown, WI; Calumet, WI; Outagamie, WI; Winnebago, WI
Forcast Office: 
NWS Green Bay WI