Alert archive / Texas / Flash Flood Warnings in 2004
Flash Flood Warning 251, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jul 29, 2004, 8:52 PM CDT for 5 counties in 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
- Jul 29, 2004, 8:52 PM CDT (01:52 UTC)
- Expired
- Jul 30, 2004, 1:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties Atascosa County, TX, Fayette County, TX, Gonzales County, TX, Karnes County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 53 km from the middle of the area, began a volume at 01:52 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 00:00Z, 1.9 hours before the alert went out and 177 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
- 2393 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1156 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KEWX 300159
FFWSAT
TXC013-149-177-255-493-300600-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
852 PM CDT THU JUL 29 2004
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
FAYETTE
GONZALES
WILSON
ATASCOSA
KARNES
* UNTIL 100 AM CDT
* AT 847 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
NUMEROUS STRONG THUNDERSTORMS PRODUCING FLASH FLOODING RAINS OF
ONE TO TWO INCHES ACROSS THE EFFECTED COUNTIES. LITTLE TO NO
MOVEMENT IS INDICATED.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS...STREAMS...HIGHWAYS AND UNDERPASSES.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED
QUICKLY.
LAT...LON 2871 9878 2871 9836 2884 9810 2874 9788
2884 9765 2902 9781 2946 9728 2966 9721
2967 9690 2998 9666 3013 9678 2975 9731
2960 9763 2934 9782 2942 9817 2908 9842
2918 9876
$$1 follow-up statement
000
WGUS74 KEWX 300546
FFSSAT
TXC013-123-149-177-255-493-300600-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1245 AM CDT FRI JUL 30 2004
...A FLASH FLOOD WARNING EXPIRES AT 1 AM CDT FOR ATASCOSA, KARNES,
DEWITT, GONZALES, FAYETTE AND WILSON COUNTIES...
AT 1240 AM CDT...SCATTERED LIGHT SHOWERS REMAINED OVER DEWITT,
GONZALES AND FAYETTE COUNTIES. THIS ACTIVITY WAS MOVING NORTHEAST
AT 15 MPH. SINCE THE HEAVIER RAINS HAVE EXITED THE COUNTIES, THE
FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 1 AM. WATERS WILL BE
RECEDING AT LOW LYING AREAS AND LOW WATER CROSSINGS.
A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 AM CDT.
LAT...LON 2940 10102 2927 10076 2943 10071 3015 10072
2988 10106
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 10:18 PM CDT | Flash Flood Warning | EWX | DeWitt | 3 hr |
| Jul 30, 6:06 AM CDT | Flash Flood Warning | EWX | Medina | 3 hr |
| Jul 30, 6:19 AM CDT | Flash Flood Warning | EWX | Uvalde | 3 hr |
| Jul 30, 6:55 AM CDT | Flash Flood Warning | EWX | Bandera | 3 hr |
| Jul 30, 8:59 AM CDT | Flash Flood Warning | EWX | Medina | 61 min |
| Jul 30, 9:11 AM CDT | Flash Flood Warning | EWX | Uvalde | 64 min |
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.