Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 30, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Mar 28, 2012, 7:30 PM CDT for 4 counties in Texas. It was in force for 3 hr. 4 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 28, 2012, 7:30 PM CDT (00:30 UTC)
- Expired
- Mar 28, 2012, 10:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Atascosa County, TX, DeWitt County, TX, Karnes County, TX, Wilson County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 28, 9:00 PM CDT | HEAVY RAIN 4.5 | 3 Ne Karnes City, TX | ESTIMATE 4 1 2 INCHES RAINFALL FROM 5PM TO 630PM. |
| Mar 28, 9:30 PM CDT | FLASH FLOOD | 10 E Karnes City, TX | PARTS OF HIGHWAY 80 SOUTH OF HELENA CLOSED DUE TO FLOODING. |
| Mar 28, 9:30 PM CDT | FLASH FLOOD | 5 Sw Karnes City, TX | PARTS OF HIGHWAY 181 NEAR KARNES CITY CLOSED DUE TO FLOODING. |
| Mar 28, 10:00 PM CDT | FLASH FLOOD | 5 Ne Campbellton, TX | PARTS OF HIGHWAY 791 NEAR CAMPBELLTON CLOSED DUE TO FLOODING. |
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, 0.5 hours before the alert went out and 134 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
- 801 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 986 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
331
WGUS54 KEWX 290030
FFWEWX
TXC013-123-255-493-290330-
/O.NEW.KEWX.FF.W.0030.120329T0030Z-120329T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
730 PM CDT WED MAR 28 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN ATASCOSA COUNTY...
SOUTHWESTERN DEWITT COUNTY...
KARNES COUNTY...
SOUTHERN WILSON COUNTY...
* UNTIL 1030 PM CDT.
* AT 719 PM CDT...SLOW MOVING THUNDERSTORMS ARE CONTINUING TO PRODUCE
VERY HEAVY RAINFALL BETWEEN CAMPBELLTON AND NORDHEIM...INCLUDING
KARNES CITY. RADAR HAS ESTIMATED THAT AS MUCH AS 6 INCHES OF RAIN HAS
FALLEN IN PORTIONS OF KARNES COUNTY SINCE 6 PM. NUMEROUS CREEKS AND
STREAMS HAVE RISEN AND HAVE FLOODED ROADWAYS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
CONTINUE. LOW WATER CROSSINGS WILL BECOME IMPASSIBLE. SOME OF THE
HEAVIEST RAIN HAS FALLEN OVER AREAS WHICH INCLUDE FM 627...FM
81...STATE HIGHWAY 80...AND STATE HIGHWAY 72. HEAVY RAIN IS ALSO
FALLING OVER FM 791 FROM CAMPBELLTON TO FALLS CITY. DRIVERS CAN EXPECT
WATER ON THE ROAD AND POSSIBLY FLOODING...AND SHOULD SEEK ALTERNATE
ROUTES. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CAMPBELLTON...KARNES CITY...KENEDY...CESTOHOWA...FALLS CITY...
NORDHEIM...RUNGE AND SMITHSON VALLEY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN WATER COVERS THE ROAD...TURN AROUND DON'T DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.
&&
LAT...LON 2863 9835 2864 9844 2899 9844 2912 9762
2888 9747 2866 9777 2868 9786 2871 9791
2869 9801 2877 9810 2863 9830 2862 9834
$$1 follow-up statement
198
WGUS74 KEWX 290305
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1005 PM CDT WED MAR 28 2012
TXC013-123-255-493-290330-
/O.CON.KEWX.FF.W.0030.000000T0000Z-120329T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DEWITT TX-WILSON TX-KARNES TX-ATASCOSA TX-
1005 PM CDT WED MAR 28 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR
SOUTHEASTERN ATASCOSA...KARNES...SOUTHERN WILSON AND SOUTHWESTERN
DEWITT COUNTIES...
THE SHOWERS AND THUNDERSTORMS PRODUCING HEAVY RAINFALL ACROSS THE
COASTAL PLAINS HAVE DECREASED IN INTENSITY AND WILL CONTINUE TO
DECREASE THROUGH THE NEXT FEW HOURS. ANY ADDITIONAL RAINFALL FROM
THESE STORMS IS NOT EXPECTED TO CAUSE MAJOR IMPACTS. LAW ENFORCEMENT
HAS REPORTED THAT MOST OF THE RUNOFF FROM THE PREVIOUS HEAVY RAINS
HAS BEGUN TO SUBSIDE. EVEN THOUGH THE HEAVIEST RAIN HAS
ENDED...DRIVERS SHOULD BE AWARE THAT THERE IS STILL WATER COVERING
SOME ROADS. FLOODED ROADS ARE VERY DIFFICULT TO SEE AT NIGHT.
LOCATIONS IN THE WARNING AREA INCLUDE RUNGE...KENEDY...KARNES CITY...
FALLS CITY...CESTOHOWA...NORDHEIM AND SMITHSON VALLEY.
LAT...LON 2863 9835 2864 9844 2899 9844 2912 9762
2888 9747 2866 9777 2868 9786 2871 9791
2869 9801 2877 9810 2863 9830 2862 9834
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 12:52 AM CDT | Severe Thunderstorm Warning | EWX | Wilson | 38 min |
| Mar 29, 1:16 AM CDT | Areal Flood Advisory | EWX | Wilson | 104 min |
| Mar 29, 1:33 AM CDT | Severe Thunderstorm Warning | EWX | Bexar, Guadalupe | 21 min |
| Mar 29, 8:55 AM CDT | Areal Flood Advisory | EWX | Caldwell | 4 hr |
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.