Active Weather Alerts
River Flood Warning
Issued: 1:40 AM Apr. 19, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE... * WHAT...Moderate flooding is occurring and forecasted to continue. * 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 12.0 feet, Structures threatened along River Street, Johnson Street, and Maiden Lane in East Dundee. North Harrison Street threatened near Riverside Park in Algonquin. Washington Street threatened in Carpentersville. Water Street, Edwards Avenue, and Elgin Avenue threatened in East Dundee. Bayview Road threatened in Elgin. Low-lying areas of Festival Park are threatened in Elgin. * ADDITIONAL DETAILS... - At 7:30 PM CDT Saturday the stage was 11.2 feet. - Forecast...The river is expected to continue gradually rising into next week. At this point, it is expected to remain just below Major Flood Stage. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood &&
Frost Advisory
Issued: 1:36 AM Apr. 19, 2026 – National Weather Service
...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT CDT /1 AM EDT/ TONIGHT TO 9 AM CDT /10 AM EDT/ SUNDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY MORNING... * WHAT...For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 28 possible. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...For the Frost Advisory, from midnight CDT /1 AM EDT/ tonight to 9 AM CDT /10 AM EDT/ Sunday. For the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. &&
Freeze Watch
Issued: 1:36 AM Apr. 19, 2026 – National Weather Service
...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT CDT /1 AM EDT/ TONIGHT TO 9 AM CDT /10 AM EDT/ SUNDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY MORNING... * WHAT...For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 28 possible. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...For the Frost Advisory, from midnight CDT /1 AM EDT/ tonight to 9 AM CDT /10 AM EDT/ Sunday. For the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. &&
Flood Warning
Issued: 7:20 PM Apr. 18, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT UNTIL 1 PM CDT SATURDAY... * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northeast Illinois, including the following counties, Lake IL and McHenry. * WHEN...Until 100 PM CDT Saturday Apr 25. * IMPACTS...Numerous roads, yards, structures, and park land are expected to flood along the Fox River Chain of Lakes. * ADDITIONAL DETAILS... - At 145 PM CDT, River gauges along the Fox River Chain of Lakes indicated slowly rises water levels due to recent rainfall across the area. - Water levels may near major flood stage by the middle of next week and remain above flood stage potentially for several weeks. Impacts from this flood may be similar to those experienced in May of 1973, October of 1986, or June of 2008. - 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 PRECAUTIONARY/PREPAREDNESS ACTIONS... Now is the time to prepare for flooding that hasn't occurred in several years. Residents living along the immediate shorelines of the Fox River Chain of Lakes need to take precautions to protect property including moving valuables to higher ground. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. &&
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