Alert archive / Texas / Flash Flood Warnings in 2004
Flash Flood Warning 69, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Apr 24, 2004, 2:08 AM CDT for Blanco County, Gillespie 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
- Apr 24, 2004, 2:08 AM CDT (07:08 UTC)
- Expired
- Apr 24, 2004, 5:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties Blanco County, TX, Gillespie County, TX
The radar
The Austin/San Antonio radar (KEWX), 100 km from the middle of the area, began a volume at 07:08 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
Del Rio, TX (KDRT), launched 00:00Z, 7.1 hours before the alert went out and 225 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
- 2594 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 842 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- -34 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 240707
FFWSAT
TXC031-171-241000-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
208 AM CDT SAT APR 24 2004
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BLANCO COUNTY IN SOUTH CENTRAL TEXAS
THIS INCLUDES THE CITIES OF...ROUND MOUNTAIN...BLANCO
GILLESPIE COUNTY IN SOUTH CENTRAL TEXAS
THIS INCLUDES THE CITY OF FREDERICKSBURG
* UNTIL 500 AM CDT
* AT 205 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM 6 MILES NORTHEAST OF LBJ STATE
PARK...OR ABOUT 15 MILES SOUTHWEST OF ROUND MOUNTAIN...MOVING
NORTHEAST AT 20 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WILLOW CITY...LUCKENBACH...JOHNSON CITY...HARPER AND CYPRESS MILL.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.
LAT...LON 3050 9929 3016 9930 3016 9858 2999 9842
3042 9821 3050 9837
$$
MSL1 follow-up statement
000
WGUS74 KEWX 240824
FFSSAT
TXC031-171-241000-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
323 AM CDT SAT APR 24 2004
...A FLASH FLOOD WARNING CONTINUES UNTIL 500 AM CDT FOR BLANCO AND
GILLESPIE COUNTIES...
AT 320 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE SCATTERED SHOWERS AND THUNDERSTORM MOVING NORTHEAST AT 20
MPH.
ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE
WARNED AREA.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.
LAT...LON 3050 9929 3016 9930 3016 9858 2999 9842
3042 9821 3050 9837
$$
MSLThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 9:38 PM CDT | Tornado Warning | EWX | Maverick | 37 min |
| Apr 24, 12:50 AM CDT | Severe Thunderstorm Warning | EWX | Medina | 25 min |
| Apr 24, 12:54 AM CDT | Severe Thunderstorm Warning | EWX | Bexar | 51 min |
| Apr 24, 1:10 AM CDT | Flash Flood Warning | EWX | Atascosa, Bexar | 3 hr |
| Apr 24, 1:15 AM CDT | Severe Thunderstorm Warning | EWX | Atascosa | 45 min |
| Apr 24, 1:30 AM CDT | Severe Thunderstorm Warning | EWX | Kendall | 45 min |
| Apr 24, 1:42 AM CDT | Severe Thunderstorm Warning | EWX | Wilson | 48 min |
| Apr 24, 2:10 AM CDT | Severe Thunderstorm Warning | EWX | Comal, Guadalupe | 50 min |
| Apr 24, 2:15 AM CDT | Flash Flood Warning | EWX | Comal | 3 hr |
| Apr 24, 2:46 AM CDT | Flash Flood Warning | EWX | Gonzales, Guadalupe | 3 hr |
| Apr 24, 3:42 AM CDT | Severe Thunderstorm Warning | EWX | Lavaca | 63 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.