Flash Flood Warning for Grundy, IL; Kankakee, IL; Kendall, IL +2 more
Official alert fields
What you need to know
- Effective
- Ends or expires
- Official severity
- Severe
- Official urgency
- Immediate
- Official certainty
- Likely
What is happening
At 1039 AM CDT, Doppler radar and automated rain gauges indicated that heavy rainfall had begun to move out of the area. Up to 2.5 inches of rainfall occurred between Ottawa and Morris from these storms. Standing water may be slow to recede over the next few hours. HAZARD...Flash flooding caused by thunderstorms....
What the bulletin says to do
A Flash Flood Warning means rapid-onset flooding is imminent or may already be occurring. Persons along creeks, drainage ditches, and other waterways should take immediate precautions to protect life and property.
Full official description
Bulletin details
At 1039 AM CDT, Doppler radar and automated rain gauges indicated that heavy rainfall had begun to move out of the area. Up to 2.5 inches of rainfall occurred between Ottawa and Morris from these storms. Standing water may be slow to recede over the next few hours. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches, streets, underpasses, low-lying areas, and other poor drainage areas. Some locations that will experience flash flooding include... Joliet, Kankakee, New Lenox, Park Forest, Mokena, Bourbonnais, Frankfort, Bradley, Morris, Channahon, Minooka, Steger, Manteno, Braidwood, Wilmington, Coal City, Marseilles and Peotone. Minor street flooding was reported earlier near Joliet.
Official geometry where available
Alert boundary
Lifecycle record
Official revisions
- Update
Flash Flood Warning issued August 12 at 10:39AM CDT until August 12 at 12:30PM CDT by NWS Chicago IL
Official revision - Alert
Flash Flood Warning issued August 12 at 9:37AM CDT until August 12 at 12:30PM CDT by NWS Chicago IL
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Chicago IL. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Update
- Last collected