Illinois Severe Thunderstorm Warning | Effective 04/14/2026 19:09

Headline: 
Severe Thunderstorm Warning issued April 14 at 9:09PM CDT until April 14 at 9:30PM CDT by NWS Chicago IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
April 14, 2026 - 7:09pm
Expires: 
April 14, 2026 - 7:30pm
Description: 
At 908 PM CDT, several severe thunderstorms were located across much of Boone and McHenry counties, moving east at 50 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. Locations impacted include... Crystal Lake, Algonquin, Lake in the Hills, McHenry, Belvidere, Woodstock, Huntley, Loves Park, Fox Lake, Harvard, Island Lake, Marengo, Poplar Grove, Cary, Johnsburg, Lakemoor, Twin Lakes, Spring Grove, Candlewick Lake, Fox River Grove, Barrington Hills, Wonder Lake, Lakewood, Pistakee Highlands, and Cherry Valley.
Instruction: 
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. Prepare immediately for damaging winds and deadly cloud to ground lightning. Seek shelter inside a well-built structure. Stay away from windows. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
Area Description: 
Boone, IL; McHenry, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov