Severe Thunderstorm Warning until 09:45AM 
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for... Lake County in northeastern Illinois... Northeastern Kane County in northeastern Illinois... McHenry County in northeastern Illinois... Northwestern Cook County in northeastern Illinois... Southeastern Boone County in north central Illinois...
* Until 945 AM CDT.
* At 840 AM CDT, severe thunderstorms were located along a line extending from near Hebron to near Woodstock to near Genoa, moving east at 60 mph. HAZARD...70 mph wind gusts and penny size hail. SOURCE...Trained Weather Spotter. This storm has had a history of 60 to 70 mph wind gusts and tree damage. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings.
* Locations impacted include... Elgin, Waukegan, Arlington Heights, Evanston, Schaumburg, Palatine, Skokie, Des Plaines, Mount Prospect, Hoffman Estates, Glenview, Buffalo Grove, Crystal Lake, Carpentersville, Wheeling, Park Ridge, Northbrook, North Chicago, Gurnee and Mundelein. Including the following interstates... I-90 between mile markers 28 and 50, and between mile markers 60 and 69. I-94 between mile markers 1 and 37. I-294 between mile markers 1 and 37.
* AFFECTED AREAS: BOONE, IL ... COOK, IL ... KANE, IL ... LAKE, IL ... MCHENRY, IL
Instructions:
For your protection move to an interior room on the lowest floor of a building.
Address/Location
City of Crystal Lake
100 W Woodstock St
Crystal Lake, IL 60014
Contact
Emergency: 9-1-1
Non-emergencies: 815-356-3620