Alert archive / Texas / Flash Flood Warnings in 2004
Flash Flood Warning 271, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Aug 23, 2004, 1:42 AM CDT for Frio County, Medina County, 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
- Aug 23, 2004, 1:42 AM CDT (06:42 UTC)
- Expired
- Aug 23, 2004, 5:45 AM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties Frio County, TX, Medina County, TX
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 6.7 hours before the alert went out and 178 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
- 2116 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 1092 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KEWX 230644 FFWSAT TXC163-325-231045- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 142 AM CDT MON AUG 23 2004 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES... MEDINA FRIO * UNTIL 545 AM CDT * AT 133 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM THUNDERSTORMS 6 MILES NORTHWEST OF DILLEY AND 8 MILES NORTHWEST OF RIO MEDINA...MOVING NORTHWEST AT 5 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE YANCEY...PEARSALL... NATALIA...MOORE...HONDO...FRIO TOWN...DHANIS...DEVINE... CASTROVILLE AND BIG FOOT. EXCESSIVE RUNOFF FROM THESE AND PREVIOUS STORMS 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 IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. LAT...LON 2865 9884 2947 9883 2963 9938 2866 9938 $$
3 follow-up statements
000 WGUS74 KEWX 230743 FFSSAT TXC163-325-231045- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 243 AM CDT MON AUG 23 2004 ...A FLASH FLOOD WARNING CONTINUES UNTIL 545 AM CDT FOR FRIO AND MEDINA COUNTIES... AT 232 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING. THIS STORM WAS LOCATED 10 MILES NORTHWEST OF DILLEY...MOVING NORTH AT 5 MPH. ANOTHER CLUSTER OF THUNDERSTORMS 10 MILES SOUTH OF DILLEY IS MOVING NORTHEAST AT 20 MPH...AND WILL CROSS INTO MEDINA COUNTY AROUND 4 AM THIS MORNING. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO YANCEY...RIO MEDINA...PEARSALL...NATALIA...MOORE...HONDO...FRIO TOWN...DHANIS...DEVINE...CASTROVILLE AND BIG FOOT. ADDITIONAL RAINFALL AMOUNTS OF 3 TO 5 INCHES ARE POSSIBLE IN FRIO COUNTY...AND 2 INCHES IN MEDINA COUNTY. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN AUSTIN SAN ANTONIO. LAT...LON 2865 9884 2947 9883 2963 9938 2866 9938 $$
000 WGUS74 KEWX 230846 FFSSAT TXC163-325-231045- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 342 AM CDT MON AUG 23 2004 ...A FLASH FLOOD WARNING CONTINUES UNTIL 545 AM CDT FOR FRIO AND MEDINA COUNTIES... AT 333 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADARS CONTINUED TO INDICATE HEAVY RAINS OVER SOUTHERN FRIO COUNTY. THIS AREA OF HEAVY RAIN IS GRADUALLY SPREADING NORTH OVER AN AREA THAT HAS ALREADY RECEIVED 3 TO 8 INCHES OF RAIN. OTHER SHOWERS ARE REDEVELOPING OVER WESTERN MEDINA COUNTY. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO YANCEY...PEARSALL...NATALIA...MOORE...HONDO...FRIO TOWN...DILLEY... DHANIS...DEVINE...CASTROVILLE AND BIG FOOT. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. 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. 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 2865 9884 2947 9883 2963 9938 2866 9938 $$
000
WGUS74 KEWX 230945
FFSSAT
TXC163-325-231045-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
436 AM CDT MON AUG 23 2004
...A FLASH FLOOD WARNING CONTINUES UNTIL 545 AM CDT FOR FRIO AND
MEDINA COUNTIES...
AT 427 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
HEAVY RAIN OVER SOUTHEAST FRIO COUNTY...WITH LIGHT TO MODERATE
SHOWERS ACROSS THE REST OF FRIO COUNTY...AND SCATTERED ACROSS MEDINA
COUNTY. ALL ACTIVITY IS MOVING EAST AT 15 MPH.
DOPPLER ESTIMATED RAINFALL TOTALS SINCE 8PM LAST NIGHT SHOW 6 TO 8
INCHES IN DIVOT, 4 TO 6 INCHES IN DILLEY, 2 TO 4 INCHES IN RIO
MEDINA AND MICO.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
YANCEY...PEARSALL...NATALIA...MOORE...HONDO...DHANIS...DEVINE...
CASTROVILLE AND BIG FOOT.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN AUSTIN
SAN ANTONIO.
LAT...LON 2866 9885 2911 9882 2948 9883 2964 9938
2866 9939
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 8:50 PM CDT | Flash Flood Warning | EWX | Bexar, Medina | 115 min |
| Aug 22, 9:15 PM CDT | Severe Thunderstorm Warning | EWX | Bexar, Medina | 60 min |
| Aug 22, 11:04 PM CDT | Flash Flood Warning | EWX | Frio | 3 hr |
| Aug 22, 11:40 PM CDT | Flash Flood Warning | EWX | Medina | 3 hr |
| Aug 23, 12:12 AM CDT | Flash Flood Warning | EWX | Bandera | 3 hr |
| Aug 23, 1:31 AM CDT | Flash Flood Warning | EWX | Kendall | 3 hr |
| Aug 23, 5:37 AM CDT | Flash Flood Warning | EWX | Frio | 113 min |
| Aug 23, 7:20 AM CDT | Flash Flood Warning | EWX | Frio | 3 hr |
| Aug 23, 8:27 AM CDT | Flash Flood Warning | EWX | Dimmit | 4 hr |
| Aug 23, 10:11 AM CDT | Flash Flood Warning | EWX | Frio | 4 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.