Active Weather Alerts
Dense Fog Advisory
Issued: 2:51 AM Apr. 17, 2026 – National Weather Service
...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT FRIDAY... * WHAT...Visibility one quarter mile or less in dense fog expected. * WHERE...McHenry County. * WHEN...Until 10 AM CDT Friday. * 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: 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 &&
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