Alert archive / Texas / Flash Flood Warnings in 2007
Flash Flood Warning 486, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Aug 18, 2007, 2:53 AM CDT for Val Verde County, Texas. It was in force for 5 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
- Aug 18, 2007, 2:53 AM CDT (07:53 UTC)
- Expired
- Aug 18, 2007, 7:30 AM CDT
- In force
- 5 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 07:56 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, 7.9 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
- 2781 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1575 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 113 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 180755
FFWEWX
TXC465-181230-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
253 AM CDT SAT AUG 18 2007
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
VAL VERDE COUNTY...
THIS INCLUDES THE CITIES OF...LOMA ALTA...LANGTRY...JUNO...
COMSTOCK...
* UNTIL 730 AM CDT
* AT 251 AM CDT...BASED ON NEXRAD RADAR ESTIMATES OF 4 TO 6 INCH
RAIN TOTALS BETWEEN PANDALE AND JUNO...NATIONAL WEATHER SERVICE
METEOROLOGISTS HAVE DETERMINED THAT FLASH FLOODING WILL CONTINUE
OVER NORTH AND CENTRAL VAL VERDE COUNTY UNTIL AT LEAST 730 AM CDT.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PANDALE AND
LOMA ALTA
IT IS ESPECIALLY HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT.
REMEMBER...TURN AROUND DONT DROWN.
LAT...LON 2980 10174 2979 10136 2965 10128 2966 10071
3028 10069 3028 10173
$$1 follow-up statement
000
WGUS74 KEWX 181116
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
609 AM CDT SAT AUG 18 2007
TXC465-181230-
VAL VERDE TX-
609 AM CDT SAT AUG 18 2007
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 AM CDT FOR VAL
VERDE COUNTY...
AT 606 AM CDT...LIGHT TO MODERATE RAIN WAS FALLING FROM SHOWERS AND
THUNDERSTORMS BETWEEN PANDALE AND JUNO. REPORTS FROM THE PANDALE
AREA INDICATE THAT NEARLY 5 INCHES FELL IN THE PERIOD FROM 1 AM
THROUGH 4 AM THIS MORNING. FLOODING IS REPORTED ALONG THE PECOS
RIVER FROM PANDALE SOUTHWARD. FLOODING IS ALSO OCCURRING ALONG THE
DEVILS RIVER FROM NEAR THE CROCKETT-VAL VERDE COUNTY LINE TO JUNO.
THE STORMS PRODUCING THE HEAVY RAIN AND FLOODING HAVE WEAKENED OVER
THE PAST HOUR.
IT IS VERY DIFFICULT TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT.
PLEASE USE EXTRA CAUTION.
REMEMBER...TURN AROUND DONT DROWN.
LAT...LON 2980 10174 2979 10136 2965 10128 2966 10071
3028 10069 3028 10173
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 8:27 PM CDT | Flash Flood Warning | EWX | Val Verde | 3 hr |
| Aug 17, 8:55 PM CDT | Flash Flood Warning | EWX | Edwards | 3 hr |
| Aug 17, 11:29 PM CDT | Flash Flood Warning | EWX | Val Verde | 4 hr |
| Aug 18, 12:41 AM CDT | River Flood Warning | EWX | Val Verde | 43 hr |
| Aug 18, 12:41 AM CDT | River Flood Warning | EWX | Val Verde | 57 hr |
| Aug 18, 12:41 AM CDT | River Flood Warning | EWX | Val Verde | 43 hr |
| Aug 18, 2:02 AM CDT | River Flood Warning | EWX | Val Verde | 8 hr |
| Aug 18, 2:02 AM CDT | River Flood Warning | EWX | Val Verde | 18 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.