Illinois Severe Thunderstorm Watch | Effective 05/15/2026 20:33

Headline: 
Severe Thunderstorm Watch issued May 15 at 10:33PM CDT until May 16 at 5:00AM CDT by NWS Chicago IL
Event: 
Severe Thunderstorm Watch
Urgency: 
Future
Effective: 
May 15, 2026 - 8:33pm
Expires: 
May 16, 2026 - 3:00am
Description: 
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 207 IN EFFECT UNTIL 5 AM CDT SATURDAY FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 4 COUNTIES IN NORTH CENTRAL ILLINOIS BOONE OGLE WINNEBAGO IN NORTHEAST ILLINOIS MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, BELVIDERE, BYRON, CRYSTAL LAKE, MCHENRY, OREGON, ROCHELLE, ROCKFORD, AND WOODSTOCK.
Area Description: 
Boone, IL; McHenry, IL; Ogle, IL; Winnebago, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov