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Grundy County IL Emergency Management Agency
Monday May 4th, 2026 :: 07:14 p.m. CDT

Alert

Severe Thunderstorm Warning until 08:00PM

SVRLOT The National Weather Service in Chicago has issued a

* Severe Thunderstorm Warning for... Southern Kendall County in northeastern Illinois... Northeastern La Salle County in north central Illinois... Grundy County in northeastern Illinois...

* Until 800 PM CDT.

* At 713 PM CDT, a severe thunderstorm was located near Ottawa, moving east at 45 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include... Joliet, Ottawa, Morris, Channahon, Minooka, Coal City, Marseilles, Diamond, Seneca, Serena, Mazon, Braceville, Naplate, Godley, Dayton, Carbon Hill, Lisbon, Plattville, Wedron, and Norway.

* AFFECTED AREAS: GRUNDY, IL ... KENDALL, IL ... LA SALLE, IL

Instructions:

For your protection move to an interior room on the lowest floor of a building.

Address/Location
Grundy County IL Emergency Management Agency
1320 Union St
Morris, IL 60450

Contact
Emergency: 9-1-1
Non-emergencies: 815-941-3212

Submit an anonymous web tip

Alert Details

Severity:
Severe - Significant threat to life or property
Urgency:
Immediate - Responsive action SHOULD be taken immediately
Certainty:
Observed - Determined to have occurred or to be ongoing
Category:
Meteorological (inc. flood)
Event:
Severe Thunderstorm Warning

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