Alert archive / Texas / Flash Flood Warnings in 2004
Flash Flood Warning 253, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jul 30, 2004, 6:06 AM CDT for Medina 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
- Jul 30, 2004, 6:06 AM CDT (11:06 UTC)
- Expired
- Jul 30, 2004, 9:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
County Medina County, TX
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 11.1 hours before the alert went out and 164 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
- 2983 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1261 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- -21 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 301107
FFWSAT
TXC325-301400-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
606 AM CDT FRI JUL 30 2004
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
MEDINA
* UNTIL 900 AM CDT
* AT 555 AM CDT...FLASH FLOODING WAS REPORTED FROM A THUNDERSTORM 18
MILES NORTH OF DHANIS...OR ABOUT OVER TARPLEY...MOVING NORTH AT 5
MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE MICO AND HONDO.
THUNDERSTORMS ARE INCREASING OVER THE NORTHERN HALF OF THE COUNTY.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF CREEKS
AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS COULD ALSO
TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.
LAT...LON 2944 9940 2962 9941 2962 9899 2955 9899
2958 9887 2950 9885 2938 9912 2925 9937
$$2 follow-up statements
000
WGUS74 KEWX 301144
FFSSAT
TXC325-301400-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
637 AM CDT FRI JUL 30 2004
...A FLASH FLOOD WARNING CONTINUES UNTIL 900 AM CDT FOR MEDINA
COUNTY...
AT 630 AM CDT...THUNDERSTORMS PRODUCING VERY HEAVY RAIN WERE LOCATED
NORTHWEST OF A LINE FROM HONDO TO MEDINA LAKE. THESE STORMS ARE
NEARLY STATIONARY. JUST 20 MILES NORTHWEST OF HONDO, DOPPLER RADAR
HAS ESTIMATED 3 INCHES OF RAIN HAS FALLEN IN ONE HOUR.
ADDITIONAL RAINFALL AMOUNTS OF 4 TO 6 INCHES ARE POSSIBLE IN THE
WARNED AREA.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. TRAVEL ALONG FARM ROAD 462 NEAR HONDO CREEK IS
DISCOURAGED. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN AUSTIN
SAN ANTONIO.
LAT...LON 2944 9940 2962 9941 2962 9899 2955 9899
2958 9887 2950 9885 2938 9912 2925 9937
$$000
WGUS74 KEWX 301230
FFSSAT
TXC325-301400-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
724 AM CDT FRI JUL 30 2004
...A FLASH FLOOD WARNING CONTINUES UNTIL 900 AM CDT FOR MEDINA
COUNTY...
AT 724 AM CDT...THUNDERSTORMS PRODUCING VERY HEAVY RAIN CONTINUED
OVER NORTHERN MEDINA COUNTY. THESE STORMS ARE NOW MOVING SLOWLY
EASTWARD TOWARDS MEDINA LAKE AND MICO. RAINFALL RATES OF 1.5 TO 2.5
INCHES AN HOUR WERE STILL BEING ESTIMATED BY RADAR.
ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN THE
WARNED AREA.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. TRAVEL ALONG FARM ROAD 462 NEAR HONDO CREEK IS
DISCOURAGED. FIND ALTERNATE ROUTES. ALSO BE AWARE OF POSSIBLE
FLOODED LOW WATER CROSSINGS ON HIGHWAY 173 BETWEEN HONDO AND
BANDERA. IT ONLY TAKES A FEW INCHES OF SWIFTLY FLOWING WATER TO
CARRY VEHICLES AWAY.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN AUSTIN
SAN ANTONIO.
LAT...LON 2944 9940 2962 9941 2962 9899 2955 9899
2958 9887 2950 9885 2938 9912 2925 9937
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 8:52 PM CDT | Flash Flood Warning | EWX | Atascosa, Fayette, Gonzales, Karnes, Wilson | 4 hr |
| Jul 29, 10:18 PM CDT | Flash Flood Warning | EWX | DeWitt | 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.