Alert archive / Texas / Flash Flood Warnings in 2004
Flash Flood Warning 376, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Nov 21, 2004, 6:53 AM CST for DeWitt County, Lavaca County, Texas. It was in force for 4 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
- Nov 21, 2004, 6:53 AM CST (12:53 UTC)
- Expired
- Nov 21, 2004, 11:00 AM CST
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties DeWitt County, TX, Lavaca County, TX
The radar
The Austin/San Antonio radar (KEWX), 95 km from the middle of the area, began a volume at 12:55 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
Corpus Christi, TX (KCRP), launched 12:00Z, 0.9 hours before the alert went out and 158 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
- 2185 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 570 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 5.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KEWX 211258
FFWEWX
TXC123-285-211700-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
653 AM CST SUN NOV 21 2004
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
LAVACA
DEWITT
* UNTIL 1100 AM CST
* AT 647 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A BAND OF THUNDERSTORMS PRODUCING HEAVY RAIN FROM WEESATCHE TO
ARNECKEVILLE TO HALLETTSVILLE. THIS BAND OF STORMS IS SLOWLY
MOVING NORTHWARD. RAINFALL RATES OF 1 INCH AN HOUR CAN BE
EXPECTED IN THE STRONGER STORMS.
* LOCATIONS IN THE WARNING INCLUDE YORKTOWN...YOAKUM...WESTHOFF...
SUBLIME...HOCHHEIM...HALLETTSVILLE...EZZELL AND CUERO.
THESE AREAS HAVE ALREADY RECEIVED HEAVY RAINS SATURDAY NIGHT AND ANY
ADDITIONAL HEAVY RAINFALL WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND
STREAMS...URBAN AREAS...HIGHWAYS...STREETS...UNDERPASSES AND POORLY
DRAINED AREAS.
LAT...LON 2890 9753 2899 9742 2894 9728 2937 9661
2966 9692 2937 9723 2905 9773
$$3 follow-up statements
000
WGUS74 KEWX 211328
FFSEWX
TXC123-285-211700-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
724 AM CST SUN NOV 21 2004
...A FLASH FLOOD WARNING CONTINUES UNTIL 1100 AM CST FOR DEWITT AND
LAVACA COUNTIES...
AT 716 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN LOCATED 11 MILES
SOUTHEAST OF CUERO...MOVING NORTHEAST AT 25 MPH. THIS STORM IS MOVING
ACROSS THOMASTON. ANOTHER STORM PRODUCING HEAVY RAINFALL WAS LOCATED
NORTH OF HALLETTSVILLE MOVING TOWARDS OAKLAND.
THESE AREAS HAVE ALREADY RECEIVED HEAVY RAINS SATURDAY NIGHT AND ANY
ADDITIONAL HEAVY RAINFALL WILL CAUSE FLASH FLOODING OF SMALL CREEKS
AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS...UNDERPASSES AND
POORLY DRAINED AREAS.
LAT...LON 2890 9753 2899 9742 2894 9728 2937 9661
2966 9692 2937 9723 2905 9773
$$000
WGUS74 KEWX 211532
FFSEWX
TXC123-285-211700-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
930 AM CST SUN NOV 21 2004
...A FLASH FLOOD WARNING CONTINUES UNTIL 1100 AM CST FOR DEWITT AND
LAVACA COUNTIES...
DURING THE LAST HOUR...THE SHOWERS AND THUNDERSTORMS HAVE WEAKENED
IN INTENSITY AND COVERAGE OVER DEWITT AND LAVACA COUNTIES. SCATTERED
SHOWERS CONTINUED TO PRODUCE RAINFALL AMOUNTS OF UP TO ONE HALF
INCH. HOWEVER SHOWERS AND THUNDERSTORMS WITH VERY HEAVY RAIN
CONTINUED JUST TO THE SOUTH...FROM BEEVILLE TO GOLIAD AND NURSERY.
HEAVY RAINS OF 1 TO 2 PER HOUR WILL LIKELY DRIFT NORTHWARD INTO
SOUTHERN DEWITT AND LAVACA COUNTIES...FROM YORKTOWN TO CUERO TO
SPEAKS OVER THE NEXT COUPLE HOURS.
HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND
STREAMS...COUNTRY ROADS...AND FARMLAND ALONG THE BANKS OF CREEKS AND
STREAMS. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. A LITTLE OVER A
FOOT OF WATER CAN CARRY AWAY MOST CARS AND TRUCKS. TURN AROUND DONT
DROWN.
LAT...LON 2890 9753 2899 9742 2894 9728 2937 9661
2966 9692 2937 9723 2905 9773
$$000
WGUS74 KEWX 211634
FFSEWX
TXC123-285-211700-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1029 AM CST SUN NOV 21 2004
...A FLASH FLOOD WARNING CONTINUES UNTIL 1100 AM CST FOR DEWITT AND
LAVACA COUNTIES...
AT 1030 AM CST...THUNDERSTORMS PRODUCING VERY HEAVY RAIN WERE MOVING
NORTH INTO SOUTHERN DEWITT COUNTY SOUTH OF HIGHWAY 72 FROM NORDHEIM
TO YORKTOWN TO CUERO. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES
CAN BE EXPECTED...ADDING TO THE FLOODING ALREADY OCCURRING.
FLASH FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED AREAS. A LITTLE
OVER A FOOT OF WATER CAN CARRY AWAY MOST CARS AND TRUCKS. TURN AROUND
DONT DROWN.
LAT...LON 2890 9753 2899 9742 2894 9728 2937 9661
2966 9692 2937 9723 2905 9773
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 20, 6:53 PM CST | Severe Thunderstorm Warning | EWX | Lavaca | 97 min |
| Nov 20, 6:58 PM CST | Tornado Warning | EWX | Lavaca | 62 min |
| Nov 20, 10:55 PM CST | Flash Flood Warning | EWX | Lavaca | 2 hr |
| Nov 21, 10:38 AM CST | Flash Flood Warning | EWX | DeWitt, Lavaca | 4 hr |
| Nov 21, 11:45 AM CST | Flash Flood Warning | EWX | Bexar | 3 hr |
| Nov 21, 12:15 PM CST | Flash Flood Warning | EWX | Gonzales, Guadalupe | 3 hr |
| Nov 21, 12:43 PM CST | Flash Flood Warning | EWX | Comal | 3 hr |
| Nov 21, 12:58 PM CST | Flash Flood Warning | EWX | Bastrop, Caldwell | 3 hr |
| Nov 21, 1:10 PM CST | Flash Flood Warning | EWX | Hays | 3 hr |
| Nov 21, 1:17 PM CST | Severe Thunderstorm Warning | EWX | Bastrop | 58 min |
| Nov 21, 1:45 PM CST | Flash Flood Warning | EWX | Blanco, Gillespie | 3 hr |
| Nov 21, 2:05 PM CST | Flash Flood Warning | EWX | Karnes, Wilson | 3 hr |
| Nov 21, 2:22 PM CST | Flash Flood Warning | EWX | Fayette, Lee | 3 hr |
| Nov 21, 2:43 PM CST | Severe Thunderstorm Warning | EWX | Blanco | 32 min |
| Nov 21, 2:55 PM CST | Severe Thunderstorm Warning | EWX | Burnet, Llano | 65 min |
| Nov 21, 3:01 PM CST | Flash Flood Warning | EWX | DeWitt, Lavaca | 3 hr |
| Nov 21, 3:20 PM CST | Flash Flood Warning | EWX | Gonzales, Guadalupe | 3 hr |
| Nov 21, 4:15 PM CST | Flash Flood Warning | EWX | Bastrop, Caldwell | 3 hr |
| Nov 21, 4:41 PM CST | Flash Flood Warning | EWX | Fayette, Lee | 4 hr |
| Nov 21, 4:41 PM CST | Flash Flood Warning | EWX | Karnes | 4 hr |
| Nov 21, 5:43 PM CST | Flash Flood Warning | EWX | Gonzales, Guadalupe, Lavaca | 3 hr |
Nearby
Flash Flood Warnings in Texas, 2004Every flash flood warning in 2004
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.