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City of Ottawa IL
Friday August 21st, 2026 :: 05:44 p.m. CDT

Alert

Severe Thunderstorm Warning until 06:30PM

SVRLOT The National Weather Service in Chicago has issued a

* Severe Thunderstorm Warning for... Northwestern La Salle County in north central Illinois... Southeastern Lee County in north central Illinois... Southwestern De Kalb County in north central Illinois...

* Until 630 PM CDT.

* At 544 PM CDT, a severe thunderstorm was located near Paw Paw, or 8 miles north of Mendota, moving southeast at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees.

* Locations impacted include... Mendota, Earlville, Leland, Paw Paw, Sublette, Compton, Troy Grove, West Brooklyn, Prairie Center, Triumph, and Harding.

* AFFECTED AREAS: DE KALB, IL ... LA SALLE, IL ... LEE, IL

Instructions:

For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.

Address/Location
City of Ottawa IL
301 W Lafayette St
Ottawa, IL 61350

Contact
Emergency: 9-1-1
Non-emergencies: 815-433-2131

TEXT-A-TIP -  Text TIP OTTAWAIL followed by your message, to 888777

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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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