Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 22, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Mar 20, 2012, 1:59 AM CDT for 13 counties in Texas. It was in force for 3 hr. 7 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
- Mar 20, 2012, 1:59 AM CDT (06:59 UTC)
- Expired
- Mar 20, 2012, 5:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Lee County, TX, Travis County, TX, Williamson County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 20, 2:00 AM CDT | FLASH FLOOD | 2 E Boerne, TX | FLOODING OF RESIDENTIAL STREETS |
| Mar 20, 2:00 AM CDT | FLASH FLOOD | 5 S Uhland, TX | HEAVY RAINS CLOSED OFF SEVERAL ROADS AND BRIDGES VCNTY OF MISTY LAND AND CR229 |
| Mar 20, 2:07 AM CDT | FLASH FLOOD | Austin, TX | JOE TANNER LANE...SPICEWOOD SPRINGS ROAD...AND MULTIPLE OTHER ROAD CLOSURES IN THE CITY OF AUSTIN. |
| Mar 20, 3:00 AM CDT | FLASH FLOOD | 5 S Uhland, TX | HEAVY RAINS CLOSED OFF SEVERAL ROADS AND BRIDGES VCNTY OF MISTY LAND AND CR229 |
| Mar 20, 3:04 AM CDT | FLASH FLOOD | 3 Ssw Briggs, TX | SWIFT WATER RESCUE IN NORTHEASTERN BURNET COUNTY. |
| Mar 20, 4:18 AM CDT | FLASH FLOOD | New Braunfels, TX | NUMEROUS ROAD CLOSURES ACROSS CITY DUE TO WATER OVER HWYS. |
| Mar 20, 5:00 AM CDT | FLASH FLOOD | Cedar Creek, TX | JENKIINS RD. ANSD CR 1764 AND FM 535 ARE CLOSED DUE TO HIGH WATER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 7.0 hours before the alert went out and 296 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
- 2851 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 778 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
370
WGUS54 KEWX 200659
FFWEWX
TXC019-021-029-031-053-055-091-187-209-259-287-453-491-201000-
/O.NEW.KEWX.FF.W.0022.120320T0659Z-120320T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
159 AM CDT TUE MAR 20 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL BANDERA COUNTY...
NORTHWESTERN BASTROP COUNTY...
NORTHERN BEXAR COUNTY...
BLANCO COUNTY...
SOUTHEASTERN BURNET COUNTY...
NORTHWESTERN CALDWELL COUNTY...
COMAL COUNTY...
NORTHWESTERN GUADALUPE COUNTY...
HAYS COUNTY...
KENDALL COUNTY...
NORTHWESTERN LEE COUNTY...
TRAVIS COUNTY...
WILLIAMSON COUNTY...
* UNTIL 500 AM CDT.
* AT 157 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
DETERMINED THAT RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE
TRAINING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
THE I35 CORRIDOR INCLUDING THE AUSTIN METROPOLITAN AREA.
ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ANDERSON MILL...AUSTIN...AUSTIN BERGSTROM INT AP...BLANCO...
BOERNE...CANYON LAKE DAM...CEDAR PARK...DRIPPING SPRINGS...ELGIN...
GEORGETOWN...GRANGER...NEW BRAUNFELS...PFLUGERVILLE...ROUND ROCK...
SAN MARCOS...SERENADA...TANGLEWOOD FOREST...TAYLOR...UNIVERSAL
CITY...WIMBERLEY...WINDEMERE...ANDICE...BARTLETT...BEE CAVE...
BERGHEIM...BUDA...BULVERDE...CEDAR CREEK...CIBOLO AND COUPLAND.
A NUMBER OF ROAD CLOSURES HAVE BEEN REPORTED IN THE AUSTIN AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 3075 9727 3048 9715 3051 9706 2943 9817
2975 9893 3094 9785
$$1 follow-up statement
966
WGUS74 KEWX 200759
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
259 AM CDT TUE MAR 20 2012
TXC019-021-029-031-053-055-091-187-209-259-287-453-491-201000-
/O.CON.KEWX.FF.W.0022.000000T0000Z-120320T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GUADALUPE TX-HAYS TX-KENDALL TX-LEE TX-TRAVIS TX-WILLIAMSON TX-
CALDWELL TX-BURNET TX-BLANCO TX-BEXAR TX-BASTROP TX-BANDERA TX-
COMAL TX-
259 AM CDT TUE MAR 20 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 AM CDT FOR
COMAL...EAST CENTRAL BANDERA...NORTHWESTERN BASTROP...NORTHERN
BEXAR...BLANCO...SOUTHEASTERN BURNET...NORTHWESTERN CALDWELL...
WILLIAMSON...TRAVIS...NORTHWESTERN LEE...KENDALL...HAYS AND
NORTHWESTERN GUADALUPE COUNTIES...
AT 248 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT SHOWERS AND THUNDERSTORMS PRODUCING MODERATE RAINS ALONG
THE I35 CORRIDOR MOVING EAST AND NORTHEAST AT 30 MPH. ADDITIONAL
RAINFALL AMOUNTS OF UP TO ONE INCH ARE POSSIBLE OVER THE NEXT COUPLE
HOURS.
NUMEROUS ROAD CLOSURES HAVE BEEN REPORTED IN THE AUSTIN METROPOLITAN
AREA DUE TO WATER OVER THE ROADWAY.
100 WEST DITTMAR
2800 O'NEAL LANE
3205 ALDELPHI LANE
12200 WATERS PARK ROAD
5200 JOE TANNER LANE
5400-7100 SPICEWOOD SPRINGS ROAD
4900 WASSON ROAD
1301 WEST OLTORF
6700 OLD BEE CAVES
5300 OLD SPICEWOOD SPRINGS
LOCATIONS IN THE WARNING AREA INCLUDE PEDERNALES FALLS STATE PARK...
SUN CITY...MAHOMET...SMITHWICK...LIBERTY HILL...ELGIN...CYPRESS
MILL...WINDEMERE...PFLUGERVILLE...MANSFIELD DAM...MANOR...LAKEWAY...
LAGO VISTA...WEIR...THRALL...TAYLOR...SERENADA...ROUND ROCK...
LEANDER...JARRELL...HUTTO...GRANGER DAM...GRANGER...GEORGETOWN DAM...
GEORGETOWN...FLORENCE...COUPLAND...CEDAR PARK...BARTLETT...ANDICE...
ANDERSON MILL AND SPICEWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IT IS HARD TO RECOGNIZE THE DANGERS OF FLOODING AT NIGHT. IF FLOOD
WATERS RISE ACT QUICKLY. DO NOT STAY IN FLOOD PRONE AREAS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 AM CDT
TUESDAY MORNING FOR SOUTH CENTRAL TEXAS.
&&
LAT...LON 3075 9727 3048 9715 3051 9706 2943 9817
2975 9893 3094 9785
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 19, 7:17 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Frio | 58 min |
| Mar 19, 7:29 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Kerr, Real | 46 min |
| Mar 19, 7:35 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kerr, Real | 55 min |
| Mar 19, 7:37 PM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 53 min |
| Mar 19, 7:42 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie | 29 min |
| Mar 19, 7:44 PM CDT | Tornado Warning | EWX | Atascosa, Medina | 31 min |
| Mar 19, 8:02 PM CDT | Tornado Warning | EWX | Bandera, Kerr | 43 min |
| Mar 19, 8:02 PM CDT | Tornado Warning | EWX | Atascosa, Bexar, Medina | 48 min |
| Mar 19, 8:07 PM CDT | Tornado Warning | EWX | Atascosa, Frio | 53 min |
| Mar 19, 8:25 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Medina, Real, Uvalde | 65 min |
| Mar 19, 8:29 PM CDT | Severe Thunderstorm Warning | EWX | Real, Uvalde | 61 min |
| Mar 19, 8:39 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Kendall, Kerr | 66 min |
| Mar 19, 8:56 PM CDT | Tornado Warning | EWX | Atascosa, Bexar | 22 min |
| Mar 19, 9:07 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Uvalde | 53 min |
| Mar 19, 9:13 PM CDT | Areal Flood Warning | EWX | Bandera, Gillespie, Kerr, Real, Uvalde | 10 min |
| Mar 19, 9:23 PM CDT | Flash Flood Warning | EWX | Bandera, Gillespie, Kerr, Real, Uvalde | 3 hr |
| Mar 19, 9:30 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kerr, Medina, Uvalde | 60 min |
| Mar 19, 9:31 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Maverick, Real, Uvalde, Zavala | 59 min |
| Mar 19, 9:59 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Gillespie, Kendall, Kerr | 61 min |
| Mar 19, 10:31 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Gillespie | 44 min |
| Mar 19, 10:34 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kendall, Kerr | 41 min |
| Mar 19, 10:58 PM CDT | Flash Flood Warning | EWX | Bandera, Kinney, Medina, Real, Uvalde | 4 hr |
| Mar 19, 11:03 PM CDT | Flash Flood Warning | EWX | Bandera, Blanco, Burnet, Gillespie, Kendall, Kerr and 2 more | 3 hr |
| Mar 19, 11:03 PM CDT | Severe Thunderstorm Warning | EWX | Medina, Uvalde | 42 min |
| Mar 19, 11:16 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Gillespie, Kendall, Kerr, Medina | 44 min |
| Mar 19, 11:39 PM CDT | Severe Thunderstorm Warning | EWX | Medina | 21 min |
| Mar 20, 12:14 AM CDT | Areal Flood Advisory | EWX | Comal, Hays, Kendall, Travis, Williamson | 3 hr |
| Mar 20, 12:20 AM CDT | Areal Flood Advisory | EWX | Atascosa, Bandera, Bexar, Medina | 3 hr |
| Mar 20, 12:28 AM CDT | Areal Flood Advisory | EWX | Dimmit, Maverick, Uvalde, Zavala | 3 hr |
| Mar 20, 1:03 AM CDT | Severe Thunderstorm Warning | EWX | Dimmit, Maverick | 42 min |
| Mar 20, 1:11 AM CDT | River Flood Warning | EWX | Kerr | 8 hr |
| Mar 20, 1:11 AM CDT | River Flood Warning | EWX | Kendall | 8 hr |
| Mar 20, 1:24 AM CDT | Flash Flood Warning | EWX | Atascosa, Bandera, Bexar, Frio, Medina | 3 hr |
| Mar 20, 1:41 AM CDT | Areal Flood Advisory | EWX | Bastrop, Bexar, Caldwell, Comal, Guadalupe, Hays and 4 more | 109 min |
| Mar 20, 2:16 AM CDT | Areal Flood Advisory | EWX | Atascosa, Frio, Guadalupe, Karnes, Medina, Wilson | 104 min |
| Mar 20, 2:24 AM CDT | Flash Flood Warning | EWX | Bastrop, Caldwell, DeWitt, Fayette, Gonzales, Guadalupe and 3 more | 3 hr |
| Mar 20, 3:09 AM CDT | Flash Flood Warning | EWX | Blanco, Burnet, Gillespie, Llano | 3 hr |
| Mar 20, 3:51 AM CDT | Flash Flood Warning | EWX | DeWitt, Fayette, Gonzales, Karnes, Lavaca, Wilson | 3 hr |
| Mar 20, 4:05 AM CDT | Tornado Warning | EWX | DeWitt, Karnes | 25 min |
| Mar 20, 5:11 AM CDT | Flash Flood Warning | EWX | Bastrop, Blanco, Burnet, Caldwell, Comal, Guadalupe and 4 more | 3 hr |
| Mar 20, 5:29 AM CDT | Flash Flood Warning | EWX | Bastrop, Caldwell, Fayette, Gonzales, Guadalupe, Lee | 2 hr |
| Mar 20, 6:23 AM CDT | River Flood Warning | EWX | Bandera | 4 hr |
| Mar 20, 7:27 AM CDT | River Flood Warning | EWX | Williamson | 3 hr |
| Mar 20, 7:27 AM CDT | River Flood Warning | EWX | Williamson | 13 hr |
| Mar 20, 8:29 AM CDT | River Flood Warning | EWX | Caldwell, Gonzales | 11 hr |
| Mar 20, 8:29 AM CDT | River Flood Warning | EWX | Caldwell, Gonzales | 11 hr |
| Mar 20, 8:29 AM CDT | River Flood Warning | EWX | Gonzales | 36 hr |
| Mar 20, 8:29 AM CDT | River Flood Warning | EWX | DeWitt | 36 hr |
| Mar 20, 10:32 AM CDT | Areal Flood Advisory | EWX | Bastrop | 118 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.