Illinois Flood Warning | Effective 04/16/2026 18:52

Headline: 
Flood Warning issued April 16 at 8:52PM CDT by NWS Chicago IL
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
April 16, 2026 - 6:52pm
Expires: 
April 17, 2026 - 1:00pm
Description: 
...The Flood Warning continues for the following rivers in Illinois... Rock River at Byron affecting Ogle County. Pecatonica River near Shirland affecting Winnebago County. Rock River at Rockton affecting Winnebago County. Rock River at Latham Park affecting Winnebago County. For the Rock River...including Rockton, Latham Park, Byron... Moderate flooding is forecast. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Rock River from Prairie Hill Road downstream to Swanson Road in Roscoe, including the Rockton gauge. * WHEN...Until further notice. * IMPACTS...At 12.0 feet, Multiple low-lying roads threatened along the river in Roscoe. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 10.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Thursday was 10.2 feet. - Forecast...The river is expected to rise to a crest of 11.4 feet early Saturday afternoon. - Flood stage is 10.0 feet. - http://www.weather.gov/safety/flood
Instruction: 
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by Friday afternoon.
Area Description: 
Winnebago, IL
Forcast Office: 
NWS Chicago IL