Illinois, Wisconsin Flood Warning | Effective 04/26/2026 08:00

Headline: 
Flood Warning issued April 26 at 10:00AM CDT by NWS Milwaukee/Sullivan WI
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
April 26, 2026 - 8:00am
Expires: 
April 26, 2026 - 8:00pm
Description: 
...The Flood Warning is extended for the following rivers in Wisconsin... Rock River At Fort Atkinson affecting Jefferson County. Rock River At Jefferson affecting Jefferson County. ...The Flood Warning continues for the following rivers in Illinois...Wisconsin... Fox River Lower Near New Munster affecting Kenosha and Lake Counties. Rock River At Newville affecting Rock County. Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. Rock River At Afton affecting Rock and Winnebago Counties. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. Fox River Near Berlin affecting Green Lake County. Crawfish River At Milford affecting Jefferson County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Afton. * WHEN...Until further notice. * IMPACTS...At 10.5 feet, Floodwaters affect Riverside Park on the north side of Janesville and South River Road on the south side of Janesville. Floodwaters affect low spots on South River Rd on the south side of Janesville. Floodwaters affect a home on South Christian Rd on the east side of the river in the Afton area. There is extensive lowland and agricultural land flooding in the Afton and Janesville areas. * ADDITIONAL DETAILS... - At 8:00 AM CDT Sunday the stage was 10.7 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:00 AM CDT Sunday was 10.8 feet. - Forecast...The river is expected to rise to a crest of 10.7 feet this afternoon. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 10.7 feet on 06/02/2000. - http://www.weather.gov/safety/flood
Instruction: 
Caution is urged when walking near riverbanks. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued this evening at 1000 PM CDT.
Area Description: 
Winnebago, IL; Rock, WI
Forcast Office: 
NWS Milwaukee/Sullivan WI
Sender: 
w-nws.webmaster@noaa.gov