The National Weather Service canceled a severe thunderstorm warning around 7:45 p.m. for McHenry and Lake counties nearly 20 minutes after announcing it.
A severe thunderstorm was located near Woodstock around 7:35 p.m., but the storm that prompted the warning weakened, according to the weather service.
A severe thunderstorm watch, however, remains in effect until 11 p.m. for McHenry County.
Scattered thunderstorms are expected to develop by early this evening across far northern Illinois, according to the NWS. Weather hazards could include: thunderstorms, hail to the size of golf balls, damaging winds, isolated flash flooding and an outside chance of a tornado.
The threat looks to be at its peak along and north of Interstate 80 mainly between 6 p.m. and 1 a.m.
