Alert archive / Texas / Flash Flood Warnings in 2007
Flash Flood Warning 4, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Sep 4, 2007, 10:38 PM CDT for Bexar 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
- Sep 4, 2007, 10:38 PM CDT (03:38 UTC)
- Expired
- Sep 5, 2007, 1:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
- Flood severity
- None
County Bexar County, TX
The radar
The Austin/San Antonio radar (KEWX), 40 km from the middle of the area, began a volume at 03:39 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 00:00Z, 3.6 hours before the alert went out and 232 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
- 1967 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 973 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KEWX 050340
FFWEWX
TXC029-050645-
/X.NEW.KEWX.FF.W.0004.070905T0338Z-070905T0645Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1038 PM CDT TUE SEP 4 2007
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BEXAR COUNTY...
* UNTIL 145 AM CDT.
* AT 1036 PM CDT...THE NATIONAL WEATHER SERVICE HAS DETERMINED THAT
RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE FLASH FLOODING FROM
THUNDERSTORMS ABOUT 12 MILES SOUTH OF SAN ANTONIO...MOVING
NORTHEAST AT 15 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SEA
WORLD...CALAVERAS LAKE...LEON VALLEY...HELOTES...OLMOS PARK...CHINA
GROVE...ALAMO HEIGHTS...TERRELL HILLS...KIRBY...CROSS MOUNTAIN...
SHAVANO PARK...LEON SPRINGS...THE DOMINION...HILL COUNTRY
VILLAGE...WINDCREST...ST. HEDWIG...HOLLYWOOD PARK...LIVE OAK...FAIR
OAKS RANCH...UNIVERSAL CITY...SELMA...SCHERTZ AND TIMBERWOOD PARK.
IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD
WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS.
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 2972 9844 2976 9841 2974 9836 2967 9839
2965 9835 2960 9834 2956 9829 2957 9824
2949 9817 2949 9813 2943 9815 2912 9842
2925 9881 2970 9881 2972 9878 2977 9856
TIME...MOT...LOC 0338Z 215DEG 13KT 2929 9847
$$2 follow-up statements
000
WGUS74 KEWX 050428
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1126 PM CDT TUE SEP 4 2007
TXC029-050645-
/X.CON.KEWX.FF.W.0004.000000T0000Z-070905T0645Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEXAR TX-
1126 PM CDT TUE SEP 4 2007
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR BEXAR
COUNTY...
AT 1118 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN CAPABLE OR
PRODUCING FLASH FLOODING OVER SAN ANTONIO. THE STRONGEST STORM WAS
LOCATED NEAR SEA WORLD...OR ABOUT 12 MILES NORTHEAST OF
CASTROVILLE...MOVING NORTHEAST AT 15 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CALAVERAS LAKE...LEON VALLEY...SAN ANTONIO...CHINA GROVE...OLMOS
PARK...HELOTES...ALAMO HEIGHTS...TERRELL HILLS...KIRBY...ST.
HEDWIG...SHAVANO PARK...WINDCREST...CROSS MOUNTAIN...HILL COUNTRY
VILLAGE...HOLLYWOOD PARK...THE DOMINION...LEON SPRINGS...LIVE OAK...
UNIVERSAL CITY...SCHERTZ...SELMA...FAIR OAKS RANCH AND TIMBERWOOD
PARK.
IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD
WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE THROUGH FLOODED
AREAS...ESPECIALLY AT NIGHT. STAY TUNED TO NOAA WEATHER RADIO OR
LOCAL NEWS MEDIA FOR THE LATEST FLOOD INFORMATION.
LAT...LON 2972 9844 2976 9841 2974 9836 2967 9839
2965 9835 2960 9834 2956 9829 2957 9824
2949 9817 2949 9813 2943 9815 2912 9842
2925 9881 2970 9881 2972 9878 2977 9856
TIME...MOT...LOC 0426Z 206DEG 10KT 2944 9869
$$000
WGUS74 KEWX 050551
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1252 AM CDT WED SEP 5 2007
TXC029-050645-
/X.CON.KEWX.FF.W.0004.000000T0000Z-070905T0645Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEXAR TX-
1252 AM CDT WED SEP 5 2007
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR BEXAR
COUNTY...
AT 1250 AM CDT...NATIONAL WEATHER SERVICE RADAR SHOWED AREA OF RAIN
CONTINUING OVER BEXAR COUNTY...FROM SHOWERS AND THUNDERSTORMS...
MOVING TO THE NORTH AND NORTHEAST AT 15 MPH.
THE HEAVIEST RAIN WAS FROM HELOTES TO LEON VALLEY...THE DOMINION...
HOLLYWOOD PARK...FAIR OAKS RANCH...AND WEST OF GARDEN RIDGE.
RAIN WILL REDUCE THE VISIBILITY TO LESS THAN 1 MILE AT TIMES...
AND CAUSE SOME FLOODING ON FLOOD PRONE STREETS AND AT LOW WATER
CROSSINGS.
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.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE THROUGH FLOODED
AREAS...ESPECIALLY AT NIGHT. STAY TUNED TO NOAA WEATHER RADIO OR
LOCAL NEWS MEDIA FOR THE LATEST FLOOD INFORMATION.
LAT...LON 2972 9844 2976 9841 2974 9836 2967 9839
2965 9835 2960 9834 2956 9829 2957 9824
2949 9817 2949 9813 2943 9815 2912 9842
2925 9881 2970 9881 2972 9878 2977 9856
TIME...MOT...LOC 0543Z 206DEG 10KT 2963 9857
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 8:18 PM CDT | Flash Flood Warning | EWX | Atascosa, Bexar | 117 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.