Alert archive / Texas / Flash Flood Warnings in 2007
Flash Flood Warning 142, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 21, 2007, 9:04 PM CDT for Val Verde 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 counties it named.
The facts
- Issued
- May 21, 2007, 9:04 PM CDT (02:04 UTC)
- Expired
- May 22, 2007, 12:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 109 km from the middle of the area, began a volume at 02:06 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, 2.1 hours before the alert went out and 66 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
- 1920 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1104 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KEWX 220207 FFWEWX TXC465-220500- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 904 PM CDT MON MAY 21 2007 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR... VAL VERDE COUNTY IN SOUTH CENTRAL TEXAS... THIS INCLUDES THE CITIES OF...LANGTRY...JUNO...DEL RIO... COMSTOCK... * UNTIL MIDNIGHT CDT * AT 902 PM CDT...THE NATIONAL WEATHER SERVICE HAS DETERMINED THAT RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE FLASH FLOODING FROM A LINE OF STRONG THUNDERSTORMS FROM LANGTRY TO BETWEEN PANDALE AND JUNO. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR CAN BE EXPECTED AS THIS LINE OF STORMS MOVES EAST AT 25 MPH ACROSS THE REMAINDER OF VAL VERDE COUNTY INCLUDING THE CITY OF DEL RIO. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SEMINOLE CANYON STATE PARK SOME RISES CAN BE EXPECTED ON THE PECOS AND DEVILS RIVER WATERSHEDS. FLOODING CAN BE EXPECTED ON LOW LYING AREAS OF HIGHWAYS 90...163...277. WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU SAVE MAY BE YOUR OWN. IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS. LAT...LON 2981 10172 2928 10081 3027 10076 3027 10174 $$
2 follow-up statements
000 WGUS74 KEWX 220338 FFSEWX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1035 PM CDT MON MAY 21 2007 TXC465-220500- VAL VERDE TX- 1035 PM CDT MON MAY 21 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR VAL VERDE COUNTY... AT 1034 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO DETECT A LINE OF STRONG THUNDERSTORMS PRODUCING HEAVY RAINS WAS MOVING OUT OF EASTERN VAL VERDE COUNTY AND EXTENDED ALONG A DEL RIO TO CARTA VALLEY TO SONORA LINE. EVEN THOUGH THE LINE IS MOVING OUT OF THE COUNTY...FLASH FLOODING CAN BE EXPECTED FOR THE NEXT HOUR OR SO DUE TO EARLIER HEAVY RAINS OF 1 TO 2 INCHES. WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU SAVE MAY BE YOUR OWN. IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS. LAT...LON 2981 10172 2928 10081 3027 10076 3027 10174 $$
000 WGUS74 KEWX 220502 FFSEWX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1201 AM CDT TUE MAY 22 2007 TXC465-220508- VAL VERDE TX- 1201 AM CDT TUE MAY 22 2007 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR VAL VERDE COUNTY... AT 1201 AM CDT...NATIONAL WEATHER SERVICE RADARS SHOWED THE RAINS HAVE ENDED ACROSS VAL VERDE COUNTY. THE THREAT OF FLASH FLOODING HAS ENDED. AS A RESULT...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. SOME STREAMS MAY CONTINUE TO RUN HIGH FOR THE NEXT HOUR OR SO DUE EARLIER HEAVY RAINS WITH THE MAIN IMPACT TO LOW LYING AREAS AND SOME LOW WATER CROSSINGS. LAT...LON 2981 10172 2928 10081 3027 10076 3027 10174 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 9:26 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 64 min |
| May 21, 9:36 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 54 min |
| May 21, 10:26 PM CDT | Flash Flood Warning | EWX | Burnet | 2 hr |
| May 21, 10:32 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 43 min |
| May 21, 10:45 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Maverick | 60 min |
| May 21, 11:15 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 30 min |
| May 21, 11:48 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit | 27 min |
| May 22, 12:30 AM CDT | Flash Flood Warning | EWX | Burnet | 2 hr |
Nearby
Flash Flood Warnings in Texas, 2007Every flash flood warning in 2007
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.