Alert archive / Illinois / Flash Flood Warnings in 2002
Flash Flood Warning 13, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Aug 23, 2002, 10:15 AM CDT for Ford County, Iroquois County, Illinois. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 23, 2002, 10:15 AM CDT (15:15 UTC)
- Expired
- Aug 23, 2002, 1:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Chicago, IL
- Area
- Counties, with a storm outline in the text
Counties Ford County, IL, Iroquois County, IL
The radar
The Chicago radar (KLOT), 106 km from the middle of the area, began a volume at 15:18 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 3.3 hours before the alert went out and 91 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 68 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 826 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KLOT 231515 FFWCHI ILC053-075-231800- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHICAGO IL 915 AM CDT FRI AUG 23 2002 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS EXTENDED A * FLASH FLOOD WARNING FOR... SOUTHERN FORD AND SOUTHERN IROQUOIS COUNTY IN EAST CENTRAL ILLINOIS * UNTIL 100 PM CDT * COOPERATIVE OBSERVERS REPORT THAT NEARLY 5 AND ONE HALF INCHES OF RAIN HAVE FALLEN ACROSS PORTIONS THE WARNING AREA OVERNIGHT AND EARLY THIS MORNING. EARLIER THIS MORNING...STATE POLICE REPORTED WATER AS HIGH AS THE HOOD OF A CAR IN THE LODA AREA. ALTHOUGH THREAT OF HEAVY RAINFALL RATES HAS ENDED...WATER LEVELS IN SMALL STREAMS AND CREEKS WILL CONTINUE TO RISE FOR SEVERAL MORE HOURS IN REPONSE TO RUNOFF. IN ADDITION...THIS IS THE SAME AREA THAT RECEIVED EXCESSIVE RAINFALL EARLIER IN THE WEEK. ADDITIONAL LIGHT RAIN IS EXPECTED TO CONTINUE UNTIL ABOUT 11 AM BEFORE PRECIPITATION ENDS COMPLET * SOME LOCATIONS AFFECTED INCLUDE... BUCKLEY... CISSNA PARK... LODA... PAXTON... MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR VEHICLE INTO AREAS IN WHICH WATER COVERS THE ROADWAY. IT ONLY TAKES TWO FEET OF WATER TO WASH MOST VEHICLES AWAY INCLUDING SUVS AND PICKUPS. VEHICLES CAUGHT IN RISING WATERS SHOULD BE ABANDONED QUICKLY. REPORT FLASH FLOODING TO YOUR NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY TUNED FOR LATER STATEMENTS. LAT...LON 4077 8760 4055 8759 4055 8806 4076 8805 MERZLOCK NNNN
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 2:59 AM CDT | Flash Flood Warning | LOT | Ford | 6 hr |
| Aug 23, 4:28 AM CDT | Flash Flood Warning | LOT | Iroquois | 6 hr |
| Aug 23, 9:15 AM CDT | Flash Flood Warning | LOT | Ford, Iroquois | 4 hr |
Nearby
Flash Flood Warnings in Illinois, 2002Every flash flood warning in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.