Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 10, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Feb 3, 2012, 10:02 PM CST for Bexar County, Texas. It was in force for 118 min. 6 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Feb 3, 2012, 10:02 PM CST (04:02 UTC)
- Expired
- Feb 4, 2012, 12:00 AM CST
- In force
- 118 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
County Bexar County, TX
The radar
The Austin/San Antonio radar (KEWX), 54 km from the middle of the area, began a volume at 04:04 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 3, 10:20 PM CST | FLASH FLOOD | 3 Ssw Shavano Park, TX | VANCE JACKSON AND ORSINGER ROAD CLOSED. |
| Feb 3, 10:36 PM CST | FLASH FLOOD | 2 Wsw Leon Valley, TX | HIGH WATER RESCUE AT GRISSOM AND TIMBERHILL. |
| Feb 3, 10:36 PM CST | FLASH FLOOD | 3 Sw Leon Valley, TX | HIGH WATER RESCUE AT PIPERS CREEK AND CULEBRA. |
| Feb 3, 10:51 PM CST | FLASH FLOOD | 3 Wnw Castle Hills, TX | VANCE JACKSON AND SUGAR HILL STREET CLOSED. |
| Feb 3, 10:55 PM CST | HEAVY RAIN 2.25 | Castle Hills, TX | |
| Feb 3, 11:24 PM CST | FLASH FLOOD | 3 Wsw Leon Valley, TX | OLD GRISSOM AND CULEBRA ROAD CLOSED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 4.0 hours before the alert went out and 220 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
- 1121 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 1270 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
795
WGUS54 KEWX 040402
FFWEWX
TXC029-040600-
/O.NEW.KEWX.FF.W.0010.120204T0402Z-120204T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1002 PM CST FRI FEB 3 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHWEST BEXAR COUNTY...
* UNTIL MIDNIGHT CST.
* AT 959 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS NORTHWEST
BEXAR COUNTY. DOPPLER RADAR RAINFALL ESTIMATES WERE 2 TO 3 INCHES
AN HOUR. MOVEMENT IS NORTHEAST AT 15 MPH.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...CROSS
MOUNTAIN...HELOTES...HILL COUNTRY VILLA...LEON SPRINGS...LEON
VALLEY...SEA WORLD...SHAVANO PARK...THE DOMINION AND TIMBERWOOD
PARK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
CULEBRA CREEK...CIBOLO CREEK...LEON CREEK...HELOTES CREEK...ALAZAN
CREEK...MEDIO CREEK...CARACOL CREEK...POTRANCA CREEK...SAN PEDRO
CREEK...ZARAZAMORA CREEK...PECAN CREEK...PANTHER SPRINGS CREEK...MUD
CREEK...ELM WATERHOLE CREEK...BALCONES CREEK...LEE CREEK...LEWIS
CREEK...SALADO CREEK...FRENCH CREEK...HUESTA CREEK...REYES CREEK,
LOS...CULBERA CREEK...SAN ANTONIO RIVER AND OLMOS CREEK.
WHEN WATER COVERS THE ROAD...TURN AROUND DON'T DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.
&&
LAT...LON 2941 9877 2973 9870 2974 9850 2973 9847
2974 9846 2973 9845 2943 9853
$$1 follow-up statement
342
WGUS74 KEWX 040446
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1046 PM CST FRI FEB 3 2012
TXC029-040600-
/O.CON.KEWX.FF.W.0010.000000T0000Z-120204T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEXAR TX-
1046 PM CST FRI FEB 3 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST FOR
CENTRAL BEXAR COUNTY...
AT 1036 PM CST...LOCAL LAW ENFORCEMENT OFFICIALS HAVE REPORTED
HIGH WATER RESCUES IN SAN ANTONIO AT PIPERS CREEK AND CULEBRA
ROAD AND AT GRISSOM AND TIMBER HILL. THUNDERSTORMS PRODUCING
FLASH FLOODING WILL CONTINUE OVER CENTRAL BEXAR COUNTY.
LOCATIONS IN THE WARNING AREA INCLUDE TIMBERWOOD PARK...THE
DOMINION...SHAVANO PARK...SEA WORLD...LEON VALLEY AND LEON SPRINGS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
CULEBRA CREEK...LEON CREEK...ALAZAN CREEK...CARACOL CREEK...MEDIO
CREEK...SAN PEDRO CREEK...ZARAZAMORA CREEK...PANTHER SPRINGS CREEK...
CIBOLO CREEK...MUD CREEK...LEE CREEK...LEWIS CREEK...SALADO CREEK...
FRENCH CREEK...HUESTA CREEK...HELOTES CREEK...SAN ANTONIO RIVER AND
OLMOS CREEK.
IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD
WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS.
&&
LAT...LON 2973 9863 2974 9855 2973 9846 2960 9848
2956 9851 2943 9853 2943 9873
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 9:18 PM CST | Areal Flood Advisory | EWX | Bexar | 2 hr |
| Feb 3, 9:45 PM CST | Areal Flood Advisory | EWX | Williamson | 105 min |
| Feb 3, 10:15 PM CST | Severe Thunderstorm Warning | EWX | Bexar | 30 min |
| Feb 3, 10:36 PM CST | Flash Flood Warning | EWX | Williamson | 114 min |
| Feb 3, 10:38 PM CST | Severe Thunderstorm Warning | EWX | Bexar | 37 min |
| Feb 3, 10:51 PM CST | Flash Flood Warning | EWX | Bexar | 3 hr |
| Feb 3, 11:15 PM CST | Severe Thunderstorm Warning | EWX | Bexar, Guadalupe | 60 min |
| Feb 4, 12:15 AM CST | Severe Thunderstorm Warning | EWX | Bexar, Guadalupe, Wilson | 45 min |
| Feb 4, 12:57 AM CST | Areal Flood Advisory | EWX | Burnet | 2 hr |
| Feb 4, 1:07 AM CST | Areal Flood Advisory | EWX | Hays, Travis | 113 min |
| Feb 4, 1:25 AM CST | Flash Flood Warning | EWX | Travis, Williamson | 3 hr |
| Feb 4, 1:54 AM CST | Areal Flood Advisory | EWX | Bexar, Guadalupe, Wilson | 2 hr |
| Feb 4, 2:32 AM CST | Areal Flood Advisory | EWX | Bandera, Medina | 118 min |
| Feb 4, 2:42 AM CST | Flash Flood Warning | EWX | Hays, Travis | 3 hr |
| Feb 4, 3:11 AM CST | Areal Flood Advisory | EWX | Bandera, Bexar, Medina | 109 min |
| Feb 4, 3:27 AM CST | Areal Flood Advisory | EWX | Bastrop, Caldwell, Hays, Lee, Travis | 2 hr |
| Feb 4, 4:06 AM CST | Areal Flood Advisory | EWX | Bexar, Comal, Guadalupe | 114 min |
Nearby
Flash Flood Warnings in Texas, 2012Every flash flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.