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City of Ottawa IL
Tuesday March 31st, 2026 :: 08:42 a.m. CDT

Alert

Severe Thunderstorm Warning until 09:30AM

SVRLOT The National Weather Service in Chicago has issued a

* Severe Thunderstorm Warning for... La Salle County in north central Illinois...

* Until 930 AM CDT.

* At 841 AM CDT, a severe thunderstorm was located over Granville, or near Hennepin, moving east at 45 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... Ottawa, Streator, Peru, La Salle, Marseilles, Sheridan, Spring Valley, Oglesby, Seneca, North Utica, Serena, Tonica, Grand Ridge, Naplate, Millington, Dayton, Lostant, Ransom, Cedar Point, Kangley, Troy Grove, Leonore, Harding, Prairie Center, and Wedron.

* AFFECTED AREAS: 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

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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