Flash Flood Warning
NWS Chicago IL ยท US
Details
Flash Flood Warning Remains In Effect Until 11 AM CDT This Morning For Southern De Kalb, Northern La Salle And Southeastern Lee Counties
- Event
- Flash Flood Warning
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Immediate
- Severity
- Severe
- Certainty
- Likely
- Response
- Avoid
Description
Overview
At 751 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 3 and 5 inches of rain have fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is already occurring.
Hazard
Flash flooding caused by thunderstorms.
Source
Radar and automated gauges.
Impacts
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... Sandwich, Mendota, Amboy, Sheridan, Lake Holiday, Somonauk, Earlville, Leland, Paw Paw, Sublette, Woodhaven Lakes, Millington, Compton and West Brooklyn.
Instructions
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.
Affected areas
- De Kalb, IL
- La Salle, IL
- Lee County, IL
Public contact
- Issuer
- NWS Chicago IL
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~33s
- CAP status
- Actual
- CAP message type
- Update
- Lifecycle
- Updated
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M2QPR79P563MCJFAS6W4Y50D
- Identifier
- urn:oid:2.49.0.1.840.0.2d9c06186a12e3e1f524935f9822544a042ddfc3.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Chicago IL
- AWIPS ID
- CAPLOT
- NWWS sequence
- nwws_processor.1231
- WMO heading
- XOUS53
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 53
References
- Sender
- w-nws.webmaster@noaa.gov
- Sent
Event codes
| Name | Value |
|---|---|
| SAME | FFS |
| NationalWeatherService | FFW |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | FFSLOT |
| WMOidentifier | WGUS73 KLOT 171251 |
| NWSheadline | FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 11 AM CDT THIS MORNING FOR SOUTHERN DE KALB, NORTHERN LA SALLE AND SOUTHEASTERN LEE COUNTIES |
| flashFloodDetection | RADAR AND GAUGE INDICATED |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| EAS-ORG | WXR |
| VTEC | /O.CON.KLOT.FF.W.0057.000000T0000Z-260917T1600Z/ |
| eventEndingTime | 2026-09-17T11:00:00-05:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- De Kalb, IL
- La Salle, IL
- Lee County, IL
| Name | Value |
|---|---|
| SAME | 017037 |
| SAME | 017099 |
| SAME | 017103 |
| UGC | ILC037 |
| UGC | ILC099 |
| UGC | ILC103 |
- Polygons
- 41.58,-89.45 41.71,-89.34 41.69,-88.6 41.52,-88.6 41.56,-89.17 41.58,-89.17 41.58,-89.45