Weather Alerts For Hoffman Estates, IL

# HEADLINE -------------------- The Flood Warning continues for the following rivers in Illinois FLOOD WARNING NOW IN EFFECT UNTIL EARLY TUESDAY MORNING # SUMMARY -------------------- Fox River at Algonquin Lock & Dam tailwater affecting McHenry, Kane and Lake IL Counties. # DETAILS -------------------- 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 early Tuesday morning. IMPACTS At 11.0 feet, Structures threatened near Elgin Avenue and Corey Street south of East Dundee. Lincoln Avenue threatened in West Dundee. Filip Street and Fox River Drive threatened in Algonquin. Fox River Trail threatened south of downtown Elgin. ADDITIONAL DETAILS - At 8:30 AM CDT Thursday the stage was 11.1 feet. - FORECAST - The river is expected to continue a gradual slow fall. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood ISSUED AT Thursday, April 30, 2026 at 9:32 AM CDT ISSUED BY National Weather Service Chicago IL HEADER Flood Statement # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- 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 late tonight.

Pollen Index: 10.1 Pollen Level: high Predominant Pollen: Cedar/Juniper, Maple and Poplar/Aspen/Cottonwood. The pollen levels for Friday will be falling but will remain in the high range. This decrease is due to falling temperatures, higher dew points and lack of strong winds.