Active Weather Alerts
Dense Fog Advisory
Issued: 11:01 AM Apr. 17, 2026 – National Weather Service
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Illinois, DuPage, Kane, Lake IL, McHenry, and Northern Cook Counties. In Indiana, Porter County. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. &&
River Flood Warning
Issued: 10:49 AM Apr. 17, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE... * WHAT...Moderate flooding is occurring and major flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until further notice. * IMPACTS...At 14.0 feet, There is flooding of the lower levels of homes in the Town of Wheatland and Village of Salem Lakes areas long Riverside Drive, Shorewood Drive, 101st Street and Shorewood Terrace. * ADDITIONAL DETAILS... - At 5:00 AM CDT Friday the stage was 13.8 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 5:00 AM CDT Friday was 13.8 feet. - Forecast...The river is expected to rise to a crest of 14.3 feet this evening. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 14.5 feet on 04/20/2013. - 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 7 am... Location stage stage stage/time Sat Sun Mon Tue New Munster 11.0 10.0 13.77 5 am 4/17 14.2 13.4 12.8 12.4 - 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 13.77 5 am 4/17 1.97 14.30 1 am 4/18 &&
Dense Fog Advisory
Issued: 8:53 AM Apr. 17, 2026 – National Weather Service
...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 10 PM CDT SATURDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to 1/4 NM or less. For the Small Craft Advisory, southwest winds to 25 kt and significant waves to 5 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...For the Dense Fog Advisory, until 10 AM CDT this morning. For the Small Craft Advisory, from 1 PM this afternoon to 10 PM CDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. &&
Small Craft Advisory
Issued: 8:53 AM Apr. 17, 2026 – National Weather Service
...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 10 PM CDT SATURDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to 1/4 NM or less. For the Small Craft Advisory, southwest winds to 25 kt and significant waves to 5 ft expected. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...For the Dense Fog Advisory, until 10 AM CDT this morning. For the Small Craft Advisory, from 1 PM this afternoon to 10 PM CDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. &&
River Flood Warning
Issued: 2:44 AM Apr. 17, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE... * WHAT...Minor 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 McBridge 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 8:30 PM CDT Thursday the stage was 10.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Thursday was 10.4 feet. - Forecast...The river is expected to rise to 11.3 feet Wednesday morning. Additional rises are possible thereafter. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood &&
River Flood Warning
Issued: 2:38 AM Apr. 17, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY WEDNESDAY MORNING... * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Des Plaines River from Townline Road in Libertyville downstream to Palatine Road in Prospect Heights, including the Lincolnshire gauge. * WHEN...Until early Wednesday morning. * IMPACTS...At 14.0 feet, Residences threatened east of the river just south of IL-22 (Half-Day Road). Lincolnshire Drive threatened at Wiltshire Lane. * ADDITIONAL DETAILS... - At 8:45 PM CDT Thursday the stage was 13.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Thursday was 13.5 feet. - Forecast...The river is expected to rise to a crest of 14.5 feet early Saturday afternoon. - Flood stage is 12.5 feet. - http://www.weather.gov/safety/flood &&
River Flood Warning
Issued: 2:38 AM Apr. 17, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL WEDNESDAY AFTERNOON... * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Des Plaines River from US-41 in Gurnee downstream to Townline Road in Vernon Hills, including the Gurnee gauge. * WHEN...Until Wednesday afternoon. * IMPACTS...At 9.0 feet, Kilbourne Road and Emerald Avenue threatened near Grand Avenue in Gurnee. * ADDITIONAL DETAILS... - At 9:30 PM CDT Thursday the stage was 9.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Thursday was 9.3 feet. - Forecast...The river is expected to rise to a crest of 9.5 feet early Friday afternoon. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood &&
River Flood Warning
Issued: 2:38 AM Apr. 17, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE... * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Des Plaines River from IL/WI state line downstream to US-41 in Gurnee, including the Russell gauge. * WHEN...Until further notice. * IMPACTS...At 8.0 feet, Agricultural and park land is inundated near the river. Residential property is threatened near the river. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 8.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Thursday was 8.3 feet. - Forecast...The river is expected to rise to a crest of 8.7 feet early Saturday morning. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood &&
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