Severe Thunderstorm Warning until 02:45AM Thursday 
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for... Winnebago County in north central Illinois... Western McHenry County in northeastern Illinois... Boone County in north central Illinois...
* Until 245 AM CDT.
* At 123 AM CDT, severe thunderstorms were located along a line extending from near Monticello to near Whitewater, moving southeast at 40 mph. HAZARD...70 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings.
* Locations impacted include... Rockford, Beloit, Lake in the Hills, Belvidere, Woodstock, Huntley, Loves Park, Machesney Park, Roscoe, Harvard, South Beloit, Rockton, Marengo, Poplar Grove, Rockford Airport, Hampshire, Candlewick Lake, Cherry Valley, Winnebago and Davis Junction. Including the following interstates... I-39 between mile markers 115 and 123. I-90 between mile markers 0 and 41. This includes...Boone County Fairgrounds, Mchenry County Fairgrounds, Rock Cut State Park, Rock Valley College, Rockford Rivets Baseball, Rockford Speedway, and Winnebago County Fairgrounds.
* AFFECTED AREAS: BOONE, IL ... MCHENRY, IL ... WINNEBAGO, 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