Alert archive / Texas / Flash Flood Warnings in 2004
Flash Flood Warning 423, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Nov 23, 2004, 7:45 PM CST for DeWitt County, Texas. 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
- Nov 23, 2004, 7:45 PM CST (01:45 UTC)
- Expired
- Nov 23, 2004, 10:45 PM CST
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
County DeWitt County, TX
The radar
The Austin/San Antonio radar (KEWX), 93 km from the middle of the area, began a volume at 01:48 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, 1.8 hours before the alert went out and 146 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
- 3323 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 782 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 7.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KEWX 240149 FFWEWX TXC123-240445- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 745 PM CST TUE NOV 23 2004 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES... DEWITT * UNTIL 1045 PM CST * AT 742 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOOD PRODUCING RAINS FROM A LARGE THUNDERSTORM COMPLEX MOVING INTO WESTERN DEWITT COUNTY. THE THUNDERSTORMS WERE MOVING EAST AT 35 MPH...HOWEVER WITH SATURATED SOIL CONDITIONS...VERY HEAVY RAINS WILL GIVE RAPID RUNOFF AND RESULTANT FLASH FLOODING. * LOCATIONS IN THE WARNING INCLUDE YORKTOWN...WESTHOFF...HOCHHEIM AND CUERO. HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS... COUNTRY ROADS...AND FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. LAT...LON 2884 9762 2912 9703 2936 9723 2902 9773 $$
1 follow-up statement
000 WGUS74 KEWX 240201 FFSEWX TXC123-240445- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 759 PM CST TUE NOV 23 2004 ...A FLASH FLOOD WARNING CONTINUES UNTIL 1045 PM CST FOR DEWITT COUNTY... AT 757 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM COMPLEX PRODUCING VERY HEAVY RAIN OVER WESTERN DEWITT MOVING EAST AT 35 MPH. SATURATED SOIL CONDITIONS OVER THE COUNTY WILL AID IN RAPID RUNOFF AND RESULTANT FLASH FLOODING. LOCATIONS IN THE WARNING INCLUDE WESTHOFF...HOCHHEIM AND CUERO. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND. DO NOT STAY IN FLOOD PRONE AREAS. LAT...LON 2884 9762 2912 9703 2936 9723 2902 9773 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 23, 6:05 PM CST | Tornado Warning | EWX | Atascosa | 55 min |
| Nov 23, 6:07 PM CST | Tornado Warning | EWX | Williamson | 53 min |
| Nov 23, 6:10 PM CST | Tornado Warning | EWX | Frio | 65 min |
| Nov 23, 6:12 PM CST | Flash Flood Warning | EWX | Burnet, Williamson | 3 hr |
| Nov 23, 6:40 PM CST | Tornado Warning | EWX | Wilson | 65 min |
| Nov 23, 6:55 PM CST | Tornado Warning | EWX | Atascosa | 65 min |
| Nov 23, 7:08 PM CST | Tornado Warning | EWX | Karnes | 67 min |
| Nov 23, 7:13 PM CST | Flash Flood Warning | EWX | Karnes | 3 hr |
| Nov 23, 7:33 PM CST | Tornado Warning | EWX | DeWitt | 57 min |
| Nov 23, 8:01 PM CST | Severe Thunderstorm Warning | EWX | Fayette, Lee | 59 min |
| Nov 23, 8:28 PM CST | Severe Thunderstorm Warning | EWX | Lavaca | 47 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.