Alert archive / Iowa / Flash Flood Warnings in 2002
Flash Flood Warning 28, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Aug 23, 2002, 12:25 AM CDT for 7 counties in Iowa; 4 counties in Illinois. It was in force for 9 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, 12:25 AM CDT (05:25 UTC)
- Expired
- Aug 23, 2002, 9:00 AM CDT
- In force
- 9 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Counties, with a storm outline in the text
Counties Des Moines County, IA, Henry County, IA, Jefferson County, IA, Keokuk County, IA, Lee County, IA, Van Buren County, IA, Washington County, IA, Hancock County, IL, Henderson County, IL, McDonough County, IL, Warren County, IL
The radar
The Quad Cities radar (KDVN), 89 km from the middle of the area, began a volume at 05:27 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
Davenport, (KDVN), launched 00:00Z, 5.4 hours before the alert went out and 94 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
- 869 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 930 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KDVN 230525
FFWMLI
IAC057-087-101-107-111-177-183-ILC067-071-109-187-231400-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1222 AM CDT FRI AUG 23 2002
THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WASHINGTON COUNTY IN SOUTHEAST IOWA
KEOKUK COUNTY IN SOUTHEAST IOWA
JEFFERSON COUNTY IN SOUTHEAST IOWA
HENRY COUNTY IN SOUTHEAST IOWA
DES MOINES COUNTY IN SOUTHEAST IOWA
VAN BUREN COUNTY IN SOUTHEAST IOWA
LEE COUNTY IN SOUTHEAST IOWA
HENDERSON COUNTY IN WEST CENTRAL ILLINOIS
WARREN COUNTY IN WEST CENTRAL ILLINOIS
HANCOCK COUNTY IN WEST CENTRAL ILLINOIS
MCDONOUGH COUNTY IN WEST CENTRAL ILLINOIS
* UNTIL 9 AM CDT
* AT 1220 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT FLASH FLOODING WAS OCCURING IN JEFFERSON...HENRY...AND DES
MOINES COUNTIES IN SOUTHEAST IOWA...AND HENDERSON...WARREN...AND
NORTHERN MCDONOUGH COUNTIES IN WEST CENTRAL ILLINOIS.
* DOPPLER RADAR ESTIMATES INDICATE THAT 2 TO 3 INCHES OF RAIN HAS
FALLEN OVER A LARGE AREA. THE HEAVIEST RAINFALL...UP TO 4 INCHES
LOCALLY...HAS BEEN FROM SOUTH OF SIGOURNEY TO FAIRFIELD TO MOUNT
PLEASANT TO BURLINGTON IN SOUTHEAST IOWA...TO RARITAN...ROSEVILLE...
LA HARPE...AND WALNUT GROVE IN WEST CENTRAL ILLINOIS.
* HEAVY RAINFALL WILL CONTINUE THRU THE NIGHT...AND INTO THE
MORNING...WITH RAINFALL TOTALS OF 5 TO 10 INCHES POSSIBLE LOCALLY.
MAJOR FLASH FLOODING WILL BE LIKELY IN SOME AREAS.
DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED ROADWAYS. THE WATER MAY
BE TOO DEEP TO CROSS SAFELY OR THE ROAD COULD BE WASHED OUT. VEHICLES
CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
LAT...LON 4106 9047 4046 9050 4068 9217 4135 9216
4128 9164 4104 9139
REANearby
Flash Flood Warnings in Iowa, 2002Flash 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.