Active Weather Alerts
Severe Thunderstorm Warning
Issued: 2:42 AM Apr. 15, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Severe Thunderstorm Warning for... Central De Kalb County in north central Illinois... * Until 1000 PM CDT. * At 941 PM CDT, severe thunderstorms were located along a line extending from near Sycamore to near Shabbona, moving east at 50 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... DeKalb, Sycamore, Cortland, Maple Park, and Malta. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. A Tornado Watch remains in effect until midnight CDT for north central and northeastern Illinois. && HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...1.25 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
Severe Thunderstorm Warning
Issued: 2:38 AM Apr. 15, 2026 – National Weather Service
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR NORTHEASTERN DE KALB AND NORTHERN KANE COUNTIES... At 937 PM CDT, severe thunderstorms were located along a line extending from near Genoa to near Davis Junction, moving east at 50 mph. HAZARD...70 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. Locations impacted include... Huntley, Genoa, Pingree Grove, Hampshire, Kingston, Elgin, Carpentersville, Algonquin, Gilberts, West Dundee, Sleepy Hollow, Sycamore, Barrington Hills and East Dundee. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until midnight CDT for north central and northeastern Illinois. Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. && TORNADO...POSSIBLE; THUNDERSTORM DAMAGE THREAT...CONSIDERABLE; HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...0.88 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...70 MPH
Tornado Watch
Issued: 1:50 AM Apr. 15, 2026 – National Weather Service
TORNADO WATCH 109, PREVIOUSLY IN EFFECT UNTIL 10 PM CDT THIS EVENING, IS NOW IN EFFECT UNTIL MIDNIGHT CDT TONIGHT FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 8 COUNTIES IN NORTH CENTRAL ILLINOIS BOONE DE KALB LEE OGLE WINNEBAGO IN NORTHEAST ILLINOIS KANE LAKE IL MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BUFFALO GROVE, BYRON, CRYSTAL LAKE, DEKALB, DIXON, ELGIN, GURNEE, MCHENRY, MUNDELEIN, OREGON, ROCHELLE, ROCKFORD, SYCAMORE, WAUKEGAN, AND WOODSTOCK.
Flood Watch
Issued: 12:11 AM Apr. 15, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT UNTIL 6 AM CDT WEDNESDAY... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Illinois, including the following areas, Boone, Central Cook, De Kalb, DuPage, Eastern Will, Kane, Kendall, Lake IL, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook, Southern Will and Winnebago and northwest Indiana, including the following area, Lake IN. * WHEN...Until 6 AM CDT Wednesday. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded. * ADDITIONAL DETAILS... - An area of thunderstorms with rain rates up to one to two inches per hour is expected to move through the area this evening through the overnight hours. Elevated soil moisture due to recent rainfall is expected to increase the susceptibility to flash flooding. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch for flash flooding means rapid-onset flooding is possible, but not yet certain, based upon the latest forecasts. Flash flooding is a dangerous situation. Persons with interests along area rivers, creeks, and other waterways should monitor the latest forecasts and be prepared to take action should flooding develop. &&
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