Flood Warning issued April 16 at 9:02PM CDT until April 17 at 7:00PM CDT by NWS Chicago IL
Issue date: 2026-04-17T02:02+00:00
...The Flood Warning continues for the following rivers in Illinois... Kishwaukee River near Perryville affecting Winnebago County. Kishwaukee River at Belvidere affecting Boone and Winnebago Counties. For the Kishwaukee River...including Belvidere, Perryville...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Kishwaukee River from County Line Road downstream to confluence with South Branch Kishwaukee River, including the Belvidere gauge. * WHEN...Until Friday evening. * IMPACTS...At 9.0 feet, Boone-McHenry County Line Road threatened. Low-lying areas are threatened in Belvidere Park. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Thursday was 9.0 feet. - Forecast...The river will remain near flood stage through Friday evening and then is expected to slowly fall. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood
Flood Warning issued April 16 at 7:58PM CDT by NWS Milwaukee/Sullivan WI
Issue date: 2026-04-17T00:58+00:00
...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Winnebago and Rock Counties. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Rock River at Afton. * WHEN...Until further notice. * IMPACTS...At 11.5 feet, Water surrounds at least 2 homes near the river in the Afton area. Numerous secondary roads in the Afton area are closed to traffic. Floodwaters affect South River Road on the south side of Janesville. Traxler Park off of Memorial Drive in Janesville is flooded. * ADDITIONAL DETAILS... - At 7:00 PM CDT Thursday the stage was 9.1 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:00 PM CDT Thursday was 9.1 feet. - Forecast...The river is expected to rise to 11.7 feet Thursday, April 23. Additional rises are possible thereafter. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 11.8 feet on 04/10/1959. - http://www.weather.gov/safety/flood
Flood Warning issued April 16 at 7:40PM CDT until April 18 at 4:00AM CDT by NWS Milwaukee/Sullivan WI
Issue date: 2026-04-17T00:40+00:00
...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Turtle Creek Near Clinton affecting Winnebago and Rock Counties. Wisconsin River At Wisconsin Dells affecting Columbia and Sauk Counties. Wisconsin River At Portage affecting Columbia County. Root River At Franklin affecting Milwaukee County. Root River Canal At Raymond affecting Racine County. Sugar River At Brodhead affecting Green, Winnebago and Rock Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Sugar River at Brodhead. * WHEN...Until early Saturday morning. * IMPACTS...At 6.0 feet, Some roads are flooded about 6 miles downstream in Avon Township of Rock County, including Beloit Newark Rd. In the Avon Bottoms area of Rock County, flooding is occurring in Sugar River Park. In Illinois, Winslow Rd is threatened near the river between Durand and Shirland. Low lying areas of Sugar Shores Camping Resort may be inundated. * ADDITIONAL DETAILS... - At 7:00 PM CDT Thursday the stage was 6.0 feet. - Bankfull stage is 4.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:00 PM CDT Thursday was 6.2 feet. - Forecast...The river is expected to fall below flood stage late tomorrow evening and continue falling to 2.0 feet Thursday, April 23. - Flood stage is 5.0 feet. - Flood History...This crest compares to a previous crest of 5.9 feet on 07/26/2010. - http://www.weather.gov/safety/flood
Hydrologic Outlook issued April 16 at 2:19PM CDT by NWS Chicago IL
Issue date: 2026-04-16T19:19+00:00
ESFLOT Additional thunderstorms are expected Friday afternoon and Friday night across northern Illinois and northwest Indiana. Atmospheric conditions are favorable for some of these storms to produce locally heavy rainfall. Many rivers across northern Illinois and northwest Indiana remain elevated. Soil moisture also remains elevated in many areas, especially in northern Illinois along the Wisconsin border. Thus, any heavy rainfall that occurs could lead to flooding of rivers, creeks, urban and low-lying areas. Rivers such as the Rock, Fox and Des Plaines which are already in flood in some locations, may be especially prone to rainfall which could exacerbate ongoing flooding. This outlook means that elevated water levels and potential impacts are possible, but not yet certain. Persons should closely monitor forecasts including the possibility of flood watches, warnings, and advisories. This outlook will be updated by Friday morning.
