Alert archive / Illinois / Flash Flood Warnings in 2023
Flash Flood Warning 18, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Sep 17, 2023, 10:07 AM CDT for Cook County, Illinois; Lake County, Indiana. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 17, 2023, 10:07 AM CDT (15:07 UTC)
- Expired
- Sep 17, 2023, 5:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cook County, IL, Lake County, IN
The radar
The Chicago radar (KLOT), 48 km from the middle of the area, began a volume at 15:05 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 7:16 PM CDT | Areal Flood Advisory | LOT | Lee | 3 hr |
| Sep 16, 8:29 PM CDT | Areal Flood Advisory | LOT | Winnebago | 3 hr |
| Sep 16, 8:46 PM CDT | Flash Flood Warning | LOT | Winnebago | 62 min |
| Sep 17, 3:54 AM CDT | Small Craft Advisory | LOT | 29 hr | |
| Sep 17, 3:55 AM CDT | Beach Hazards Statement | LOT | Cook, Lake | 29 hr |
| Sep 17, 6:02 AM CDT | Areal Flood Advisory | LOT | Cook | 3 hr |
| Sep 17, 7:26 AM CDT | Flash Flood Warning | LOT | Cook, DuPage | 5 hr |
| Sep 17, 7:30 AM CDT | Special Marine Warning | LOT | 90 min | |
| Sep 17, 8:11 AM CDT | Special Marine Warning | LOT | 49 min | |
| Sep 17, 8:53 AM CDT | Special Marine Warning | LOT | 2 hr | |
| Sep 17, 10:50 AM CDT | Flash Flood Warning | LOT | Cook | 3 hr |
| Sep 17, 12:35 PM CDT | Special Marine Warning | LOT | 115 min | |
| Sep 17, 4:57 PM CDT | Areal Flood Warning | LOT | Cook | 16 hr |
Nearby
Flash Flood Warnings in Illinois, 2023Flash Flood Warnings in Indiana, 2023Every flash flood warning in 2023
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.