Alert archive / Texas / Flash Flood Warnings in 2004
Flash Flood Warning 87, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 13, 2004, 11:29 AM CDT for Williamson County, Texas. It was in force for 2 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
- May 13, 2004, 11:29 AM CDT (16:29 UTC)
- Expired
- May 13, 2004, 1:30 PM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
County Williamson County, TX
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 4.5 hours before the alert went out and 232 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
- 3428 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 581 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 199 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 131631 FFWSAT TXC491-131830- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1129 AM CDT THU MAY 13 2004 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS EXTENDED A * FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES... WILLIAMSON * UNTIL 130 PM CDT * AT 1125 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS MOVING EAST TOWARD WILLIAMSON COUNTY AT 20 MPH. 3 TO 6 INCHES OF RAIN HAS ALREADY FALLEN OVER THE EASTERN HALF OF WILLIAMSON COUNTY. AN ADDITIONAL 2 INCHES OF RAIN IS EXPECTED FROM THE APPROACHING SHOWERS AND THUNDERSTORMS. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. LAT...LON 3087 9790 3049 9785 3066 9702 3091 9731 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 8:28 AM CDT | Flash Flood Warning | EWX | Williamson | 3 hr |
| May 13, 2:17 PM CDT | Severe Thunderstorm Warning | EWX | Wilson | 58 min |
| May 13, 2:30 PM CDT | Flash Flood Warning | EWX | Gonzales, Karnes, Wilson | 3 hr |
| May 13, 3:02 PM CDT | Flash Flood Warning | EWX | Bastrop, Caldwell, Fayette | 4 hr |
| May 13, 3:36 PM CDT | Tornado Warning | EWX | Karnes | 54 min |
| May 13, 4:34 PM CDT | Flash Flood Warning | EWX | DeWitt, Gonzales, Karnes, Lavaca, Wilson | 3 hr |
| May 13, 4:40 PM CDT | Flash Flood Warning | EWX | Karnes | 3 hr |
| May 13, 6:24 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 66 min |
| May 13, 6:57 PM CDT | Flash Flood Warning | EWX | Llano | 2 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.