- Thursday August 13th, 2026 :: 11:35 p.m. CDT
Flood Advisory until 02:30AM Friday 
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Central La Salle County in north central Illinois... Southwestern Grundy County in northeastern Illinois...
* WHEN...Until 230 AM CDT.
* IMPACTS...Creeks and streams may rise out of their banks. Roads and streets may be flooded.
* ADDITIONAL DETAILS... - At 1134 PM CDT, Doppler radar and automated rain gauges indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen, with the heaviest rain occurring from La Salle to Ransom. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Ottawa, Streator, Peru, La Salle, Marseilles, Dwight, Oglesby, North Utica, Tonica, Grand Ridge, Naplate, Lostant, Ransom, Cedar Point, Kangley, Verona, Leonore and Kinsman. - http://www.weather.gov/safety/flood
* AFFECTED AREAS: GRUNDY, IL ... LA SALLE, IL
Instructions:
A Flood Advisory means minor flooding along waterways and other poor drainage areas is imminent or may already be occurring. Persons in the advisory area should use caution and avoid flood waters. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.
Address/Location
Vermilion Valley Regional Communications Joint Authority
844 W Lincoln St
Pontiac, IL 61764
Contact
Emergency: 9-1-1
Non-emergencies: 815-844-0911
TEXT-A-TIP - Text TIP VCOM followed by your message, to 888777
Alert Details
- Severity:
- Minor - Minimal to no known threat to life or property
- Urgency:
- Expected - Responsive action SHOULD be taken soon (within next hour)
- Certainty:
- Likely (p > ~50%)
- Category:
- Meteorological (inc. flood)
- Event:
- Flood Advisory
