Flash Flood Warning Issued for Northern La Salle County Until Midnight

Alert Details

The National Weather Service in Chicago has issued a Flash Flood Warning for northern La Salle County in north central Illinois. The alert was issued at 8:10 PM CDT following radar indications of heavy rainfall in the area.

Affected Areas

The warning covers northern La Salle County. Specific locations expected to experience flash flooding include:

• Ottawa, Peru, La Salle, and Marseilles
• Sheridan, Lake Holiday, Oglesby, and Seneca
• North Utica, Serena, Naplate, and Millington
• Dayton, Troy Grove, Wedron, Harding, Prairie Center, Triumph, and Norway

Flooding is expected to be particularly prevalent in urbanized areas and along the Illinois River Valley.

What You Should Do

A Flash Flood Warning indicates that rapid-onset flooding is imminent or already occurring. Residents and travelers should take the following actions:

• Move to higher ground immediately if you are in a flood-prone area.
• Persons located along creeks, drainage ditches, and other waterways should take immediate precautions to protect life and property.
• Avoid driving through flooded streets or underpasses.

Expected Conditions

At 8:10 PM CDT, Doppler radar indicated multiple rounds of thunderstorms moving through the region. These storms are producing rainfall at rates of 1 to 2 inches per hour. Hazards include rapid-onset flooding of creeks, streams, drainage ditches, streets, underpasses, and other low-lying or poor-drainage areas.

Timeline

The Flash Flood Warning is effective immediately and is scheduled to remain in effect until 12:00 AM CDT on Wednesday, March 11.