Illinois Minor Flood Advisory | Effective 08/21/2026 17:58

Headline: 
Flood Advisory issued August 21 at 7:58PM CDT until August 22 at 12:00AM CDT by NWS Chicago IL
Event: 
Flood Advisory
Urgency: 
Expected
Effective: 
August 21, 2026 - 5:58pm
Expires: 
August 21, 2026 - 10:00pm
Description: 
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Southwestern La Salle County in north central Illinois... * WHEN...Until midnight CDT tonight. * IMPACTS...Flooding may occur in poor drainage areas. Roads and streets may be flooded. * ADDITIONAL DETAILS... - At 756 PM CDT, Doppler radar indicated thunderstorms with rate rates up to 2 inches per hour near the town Granville. Minor flooding may begin shortly after the onset of heavy rainfall in the advisory area. - Some locations that will experience flooding include... Tonica, Lostant, Rutland, Cedar Point, Dana and Leonore. - http://www.weather.gov/safety/flood
Instruction: 
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. Be especially cautious at night when it is harder to recognize the dangers of flooding.
Area Description: 
La Salle, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov