Active Weather Alerts
River Flood Warning
Issued: 1:45 AM Apr. 28, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE... * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until further notice. * IMPACTS...At 11.5 feet, Residences threatened along Oceola Drive in Algonquin. A few residences threatened along McBride Street in Elgin. Jayne Street and Beach Drive threatened in Algonquin. River Street threatened in East Dundee. Jerusha Avenue threatened in Elgin. Fox River Trail threatened between East Dundee and Elgin. * ADDITIONAL DETAILS... - At 7:30 PM CDT Monday the stage was 11.6 feet. - Recent Activity...The river has been falling slowly over the last few days. - Forecast...The river is expected to continue a slow fall over the next several days. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood &&
Small Craft Advisory
Issued: 8:56 PM Apr. 27, 2026 – National Weather Service
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 AM CDT TUESDAY... ...GALE WARNING IS CANCELLED... * WHAT...South so southwest winds to 30 kt and significant waves to 7 ft occasionally to 9 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
River Flood Warning
Issued: 8:51 PM Apr. 27, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL SUNDAY MORNING... * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until Sunday morning. * IMPACTS...At 12.0 feet, Water is up to the first floor levels of some homes in the Town of Wheatland and Village of Salem Lakes area along Riverside Drive and Shorewood Drive. * ADDITIONAL DETAILS... - At 3:00 PM CDT Monday the stage was 12.4 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 PM CDT Monday was 12.8 feet. - Forecast...The river is expected to fall below flood stage early Sunday morning and continue falling to 10.7 feet Monday, May 04. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 12.4 feet on 05/25/2019. - http://www.weather.gov/safety/flood && River forecasts are available for some but not all river gaging locations. The 7 day river forecast takes into account past precipitation, soil moisture conditions, and predicted precipitation for the basin. Precipitation is for the next 24 hours in the future from April through September and for 48 hours in the future from October through March. (Stages in ft.) Bank- Latest Forecast stages - Flood full observed ...for 1 pm... Location stage stage stage/time Tue Wed Thu Fri New Munster 11.0 10.0 12.37 3 pm 4/27 12.1 11.8 11.6 11.4 - Highest 24 hour change - observed in river stage - stage in (ft.) up to Highest stage - the last latest observed forecast in - 7 days stage next 7 days New Munster 14.75 3 pm 4/20 -0.42 12.40 1 pm 4/27 &&
Flood Warning
Issued: 7:22 PM Apr. 27, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE... * WHAT...Flooding caused by excessive rainfall continues. * WHERE...A portion of northeast Illinois, including the following counties, Lake IL and McHenry. * WHEN...Until further notice. * IMPACTS...Numerous roads, yards, structures, and areas of park land are flooding along the Fox River Chain of Lakes. Flooding is expected to continue at least through the end of this week. * ADDITIONAL DETAILS... - At 216 PM CDT, River gauges along the Fox River Chain of Lakes indicated that water levels continue to slowly fall, with water levels just above moderate flood stage. - The latest forecast from the Illinois Department of Natural Resources indicates that water levels should continue to slowly fall this week. Water levels may near flood stage by this weekend. - Some locations that will experience flooding include areas along the Fox River Chain of Lakes, including Nippersink Lake, Fox Lake, Pistakee Lake, Petite Lake, Lake Marie, Channel Lake, and Lake Catherine. - http://www.weather.gov/safety/flood &&
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