Severe Thunderstorm Warning until 04:15PM 
The National Weather Service in Chicago has issued a
* Severe Thunderstorm Warning for... East central La Salle County in north central Illinois... Northwestern Grundy County in northeastern Illinois...
* Until 415 PM CDT.
* At 323 PM CDT, a severe thunderstorm was located near Grand Ridge, or near Marseilles, moving northeast at 30 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected.
* Locations impacted include... Morris, Minooka, Marseilles and Seneca. Including the following interstate... I-80 between mile markers 96 and 120. This includes... Gebhard Woods State Park, Grundy County Speedway and Fairgrounds, Illini State Park, and William G Stratton State Park.
* AFFECTED AREAS: GRUNDY, IL ... LA SALLE, IL
Instructions:
For your protection move to an interior room on the lowest floor of a building.
Address/Location
City of Ottawa IL
301 W Lafayette St
Ottawa, IL 61350
Contact
Emergency: 9-1-1
Non-emergencies: 815-433-2131