Alert archive / Texas / Flash Flood Warnings in 2007

Flash Flood Warning 293, NWS Austin/San Antonio, TX

July 4, 2007Gonzales County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 4, 2007, 8:11 AM CDT for Gonzales County, Texas. It was in force for 6 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
Jul 4, 2007, 8:11 AM CDT (13:11 UTC)
Expired
Jul 4, 2007, 2:15 PM CDT
In force
6 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Gonzales County, TX

The radar

The Austin/San Antonio radar (KEWX), 59 km from the middle of the area, began a volume at 13:12 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

Corpus Christi, TX (KCRP), launched 12:00Z, 1.2 hours before the alert went out and 193 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.

Skew-T log-pSkew-T log-p diagram, Corpus Christi, TX at 12:00Z on 2007-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3369 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2007-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -57 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
3369 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
513 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-57 m²/s²
0-3 km storm-relative helicity
-15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KEWX 041311
FFWEWX
TXC177-041915-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
811 AM CDT WED JUL 4 2007

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GONZALES COUNTY IN SOUTH CENTRAL TEXAS...
  THIS INCLUDES THE CITY OF GONZALES...

* UNTIL 215 PM CDT WEDNESDAY

* AT 806 AM CDT...THE NATIONAL WEATHER SERVICE HAS DETERMINED THAT
  RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE FLASH FLOODING FROM
  A THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WAELDER AND
  PALMETO

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

DO NOT DRIVE WHERE WATER COVERS THE ROAD. TWO FEET OF RUSHING WATER
CAN CARRY AWAY MOST VEHICLES...INCLUDING SUVS AND PICKUPS. TURN
AROUND DONT DROWN.

LAT...LON 2959 9721 2952 9721 2938 9724 2925 9745
      2912 9762 2931 9781 2937 9785 2965 9764
      2964 9760 2978 9732 2964 9714

$$
4 follow-up statements
000 
WGUS74 KEWX 041449
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
949 AM CDT WED JUL 4 2007

TXC177-041915-
GONZALES TX-
949 AM CDT WED JUL 4 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR
GONZALES COUNTY...

AT 948 AM CDT...WIDESPREAD SHOWERS WITH ISOLATED THUNDERSTORMS WERE 
MOVING NORTHWEST AT 10 MPH ACROSS THE COASTAL PLAINS AND SOUTHERN 
PORTIONS OF SOUTH CENTRAL TEXAS. THESE STORMS WILL PRODUCE 
ADDITIONAL RAINFALL OVER GROUNDS WHICH ARE ALREADY SATURATED. 
ONGOING FLASH FLOODING IS LIKELY ACROSS THIS REGION.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
WAELDER...PALMETO AND GONZALES.

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

DO NOT EVER DRIVE WHERE WATER COVERS THE ROAD. LESS THAN TWO FEET OF 
RUSHING WATER CAN CARRY AWAY MOST VEHICLES...INCLUDING SUVS AND 
PICKUPS. TURN AROUND DONT DROWN.

LAT...LON 2959 9721 2952 9721 2938 9724 2925 9745
      2912 9762 2931 9781 2937 9785 2965 9764
      2964 9760 2978 9732 2964 9714

$$
000 
WGUS74 KEWX 041612
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1112 AM CDT WED JUL 4 2007

TXC177-041915-
GONZALES TX-
1112 AM CDT WED JUL 4 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR
GONZALES COUNTY...

AT 1112 AM CDT...WIDESPREAD SHOWERS WITH ISOLATED THUNDERSTORMS WERE 
MOVING NORTHWEST AT 10 MPH ACROSS THE COASTAL PLAINS AND SOUTHERN 
PORTIONS OF SOUTH CENTRAL TEXAS. THESE STORMS WILL PRODUCE 
ADDITIONAL RAINFALL OVER GROUNDS WHICH ARE ALREADY SATURATED. 
ONGOING FLASH FLOODING IS LIKELY ACROSS THIS REGION.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
WAELDER...PALMETO AND GONZALES.

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.

DO NOT EVER DRIVE WHERE WATER COVERS THE ROAD. LESS THAN TWO FEET OF 
RUSHING WATER WILL CARRY AWAY MOST VEHICLES. TURN AROUND DONT DROWN.

LAT...LON 2959 9721 2952 9721 2938 9724 2925 9745
      2912 9762 2931 9781 2937 9785 2965 9764
      2964 9760 2978 9732 2964 9714

$$
000 
WGUS74 KEWX 041822
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
122 PM CDT WED JUL 4 2007

TXC177-041915-
GONZALES TX-
122 PM CDT WED JUL 4 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR
GONZALES COUNTY...

AT 118 PM CDT...LIGHT RAIN WAS FALLING ACROSS MUCH OF SOUTH CENTRAL 
TEXAS. HOWEVER...DUE TO ALREADY SATURATED GROUNDS AND RUNOFF FROM   
PREVIOUS RAINFALL...FLASH FLOODING CAN STILL BE EXPECTED THROUGH     
THE AFTERNOON.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
WAELDER...PALMETO AND GONZALES.

WHEN WATER COVERS THE ROAD...TURN AROUND DONT DROWN. THE LIFE YOU 
SAVE MAY BE YOUR OWN.

DO NOT DRIVE WHERE WATER COVERS THE ROAD. TWO FEET OF RUSHING WATER 
CAN CARRY AWAY MOST VEHICLES. TURN AROUND DONT DROWN.


LAT...LON 2959 9721 2952 9721 2938 9724 2925 9745
      2912 9762 2931 9781 2937 9785 2965 9764
      2964 9760 2978 9732 2964 9714

$$
000 
WGUS74 KEWX 041906
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
205 PM CDT WED JUL 4 2007

TXC177-041915-
GONZALES TX-
205 PM CDT WED JUL 4 2007

...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 215 PM CDT 
FOR GONZALES COUNTY...

THE HEAVIEST OF THE RAINFALL OVER GONZALES COUNTY HAS DISSIPATED. 
HOWEVER...THERE IS AN ONGOING CHANCE FOR ADDITIONAL SHOWERS AND 
THUNDERSTORMS THIS AFTERNOON AND EVENING. ANY ADDITIONAL RAIN MAY 
CAUSE FLASH FLOODING.

LAT...LON 2959 9721 2952 9721 2938 9724 2925 9745
      2912 9762 2931 9781 2937 9785 2965 9764
      2964 9760 2978 9732 2964 9714

$$

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 7:50 PM CDTFlash Flood WarningEWXComal3 hr
Jul 3, 7:50 PM CDTFlash Flood WarningEWXComal3 hr
Jul 3, 8:22 PM CDTFlash Flood WarningEWXKendall3 hr
Jul 4, 6:56 AM CDTFlash Flood WarningEWXAtascosa, DeWitt, Karnes, Lavaca6 hr
Jul 4, 6:56 AM CDTFlash Flood WarningEWXAtascosa, DeWitt, Frio, Karnes, Lavaca6 hr
Jul 4, 7:57 AM CDTFlash Flood WarningEWXWilson6 hr
Jul 4, 8:51 AM CDTFlash Flood WarningEWXGuadalupe6 hr
Jul 4, 9:58 AM CDTFlash Flood WarningEWXBexar4 hr
Jul 4, 10:59 AM CDTFlash Flood WarningEWXComal, Hays6 hr
Jul 4, 12:52 PM CDTFlash Flood WarningEWXDeWitt, Karnes, Lavaca6 hr
Jul 4, 12:56 PM CDTFlash Flood WarningEWXAtascosa, Bexar, DeWitt, Frio, Karnes2 hr
Jul 4, 1:33 PM CDTFlash Flood WarningEWXWilliamson3 hr
Jul 4, 1:54 PM CDTFlash Flood WarningEWXBexar66 min

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.