Active Weather Alerts
Severe Thunderstorm Warning
Issued: 12:42 AM Apr. 3, 2026 – National Weather Service
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR MCHENRY COUNTY... At 741 PM CDT, severe thunderstorms were located along a line extending from Silver Lake to Pistakee Highlands to near Prairie Grove to Huntley, moving northeast at 60 mph. HAZARD...70 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. These severe storms will be near... Crystal Lake, Algonquin, Lake in the Hills, McHenry, Woodstock, Huntley, Fox Lake, Island Lake, Cary, and Johnsburg around 745 PM CDT. Port Barrington around 750 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 1100 PM 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...1.00 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...70 MPH
Tornado Warning
Issued: 12:40 AM Apr. 3, 2026 – National Weather Service
The National Weather Service in Chicago has issued a * Tornado Warning for... Northern Lake County in northeastern Illinois... Northeastern McHenry County in northeastern Illinois... * Until 815 PM CDT. * At 740 PM CDT, severe thunderstorms capable of producing both tornadoes and extensive straight line wind damage were located along a line extending from near Hebron to McHenry, moving east at 45 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. * These dangerous storms will be near... Round Lake Beach, McHenry, Round Lake, Fox Lake, Lake Villa, Johnsburg, Lakemoor, Twin Lakes, Spring Grove, and Long Lake around 745 PM CDT. Grayslake, Antioch, Lindenhurst, Venetian Village, Lake Catherine, and Third Lake around 750 PM CDT. Gurnee and Grandwood Park around 755 PM CDT. Waukegan and Wadsworth around 800 PM CDT. Zion, Beach Park, and Winthrop Harbor around 805 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW! Move to a basement or an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris. && TORNADO...RADAR INDICATED; MAX HAIL SIZE...0.00 IN
Severe Thunderstorm Warning
Issued: 12:28 AM Apr. 3, 2026 – National Weather Service
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR NORTHEASTERN DE KALB...NORTHERN KANE...MCHENRY AND SOUTHEASTERN BOONE COUNTIES... At 727 PM CDT, severe thunderstorms were located along a line extending from near Hebron to near Woodstock to near Genoa, moving northeast at 60 mph. HAZARD...70 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. These severe storms will be near... Crystal Lake, Lake in the Hills, McHenry, Woodstock, Huntley, Fox Lake, Johnsburg, Lakemoor, Spring Grove, and Wonder Lake around 735 PM CDT. Island Lake around 740 PM CDT. Oakwood Hills around 745 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Tornado Watch remains in effect until 1100 PM 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...1.00 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...70 MPH
Tornado Watch
Issued: 11:53 PM Apr. 2, 2026 – National Weather Service
TORNADO WATCH 89, PREVIOUSLY IN EFFECT UNTIL 8 PM CDT THIS EVENING, IS NOW IN EFFECT UNTIL 11 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 10 COUNTIES IN NORTH CENTRAL ILLINOIS BOONE DE KALB LA SALLE LEE OGLE WINNEBAGO IN NORTHEAST ILLINOIS GRUNDY KANE KENDALL MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BYRON, COAL CITY, CRYSTAL LAKE, DEKALB, DIXON, ELGIN, LA SALLE, MARSEILLES, MCHENRY, MENDOTA, MINOOKA, MORRIS, OREGON, OSWEGO, OTTAWA, PLANO, ROCHELLE, ROCKFORD, STREATOR, SYCAMORE, WOODSTOCK, AND YORKVILLE.
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