< Wisconsin Flood Warning | Effective 04/21/2026 19:47

Wisconsin Flood Warning | Effective 04/21/2026 19:47

Headline: 
Flood Warning issued April 21 at 9:47PM CDT by NWS Milwaukee/Sullivan WI
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
April 21, 2026 - 7:47pm
Expires: 
April 22, 2026 - 8:00am
Description: 
...The Flood Warning continues for the following rivers in Wisconsin... Rock River At Fort Atkinson affecting Jefferson County. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Rock River at Fort Atkinson. * WHEN...Until further notice. * IMPACTS...At 17.5 feet, Floodwaters partially cover low spots on Highway 106 near Rock River Park. A riverside walkway near South Water Street in downtown Fort Atkinson is closed. A few homes and businesses are surrounded by water at the end of Vets lane near the intersection of Highway 106 and Blackhawk Island Road about 1 mile southwest of Fort Atkinson. North Shore Road about 1 mile southwest of Fort Atkinson is closed. Ralph Rd impacted. Floodwaters cover fields on the east side of Fort Atkinson. * ADDITIONAL DETAILS... - At 9:00 PM CDT Tuesday the stage was 17.4 feet. - Bankfull stage is 14.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 PM CDT Tuesday was 17.4 feet. - Forecast...The river is expected to rise to a crest of 17.4 feet just after midnight tonight. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 17.4 feet on 09/11/2018. - http://www.weather.gov/safety/flood
Instruction: 
Caution is urged when walking near riverbanks. Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued Wednesday morning at 1000 AM CDT.
Area Description: 
Jefferson, WI
Forcast Office: 
NWS Milwaukee/Sullivan WI