A thin, but strong line of thunderstorms is moving from west to east, and is expected between 1:30 p.m. and 3:00 p.m. in the northwest suburbs of Chicago. Severe Thunderstorm Warnings have already been issued in all of Lake County and southeast McHenry. Frequent cloud-to-ground lightning and severe damaging winds are possible with the thunderstorms.
A SEVERE THUNDERSTORM WARNING was issued at 1:41 p.m. Thunder is already rumbling north and west of Arlington Heights at 1:30 p.m. The radar image heading toward Arlington Heights has strengthen since the SEVERE THUNDERSTORM WATCH was issued about 30 minutes ago.
The National Weather Service reported at 1:03 p.m. that the office received reports of quarter to golf ball size hail with this storm when it was in northwestern McHenry County.
Weather Radar) shows strong thunderstorms in a line from Central Michigan to Western Illinois just passing the McHenry, Kane, Lake, and Cook County corners approaching northwest Cook County.