Alert archive / Texas / Flash Flood Warnings in 2012
Flash Flood Warning 47, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jul 12, 2012, 7:13 AM CDT for DeWitt County, Gonzales County, Lavaca County, Texas. It was in force for 4 hr. 2 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
- Jul 12, 2012, 7:13 AM CDT (12:13 UTC)
- Expired
- Jul 12, 2012, 11:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties DeWitt County, TX, Gonzales County, TX, Lavaca County, TX
The radar
The Austin/San Antonio radar (KEWX), 92 km from the middle of the area, began a volume at 12:15 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 |
|---|---|---|---|
| Jul 12, 9:00 AM CDT | FLASH FLOOD | 2 N Cuero, TX | NUMEROUS SECONDARY ROADS ARE COVERED WITH WATER. |
| Jul 12, 9:30 AM CDT | FLASH FLOOD | 6 Sse Cheapside, TX | FM 766 IS CLOSED DUE TO WATER OVER THE ROAD. |
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 12:00Z, 0.2 hours before the alert went out and 170 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
- 2471 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 597 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -82 m²/s²
- 0-3 km storm-relative helicity
- -22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
375
WGUS54 KEWX 121213
FFWEWX
TXC123-177-285-121400-
/O.NEW.KEWX.FF.W.0047.120712T1213Z-120712T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
713 AM CDT THU JUL 12 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN DEWITT COUNTY...
SOUTH CENTRAL GONZALES COUNTY...
WEST CENTRAL LAVACA COUNTY...
* UNTIL 900 AM CDT.
* AT 709 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
DETERMINED THAT RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE
TRAINING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. STORM TOTAL ESTIMATES NEAR 2 INCHES OF RAIN HAS
FALLEN FROM EDGAR TO WESTHOFF OVER THE PAST THREE HOURS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CUERO...YOAKUM...CHEAPSIDE...HOCHHEIM AND WESTHOFF.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN WATER COVERS THE ROAD...TURN AROUND DON'T DROWN. THE LIFE YOU
SAVE MAY BE YOUR OWN.
&&
LAT...LON 2941 9704 2927 9698 2910 9715 2904 9757
2928 9762
$$3 follow-up statements
046
WGUS74 KEWX 121322
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
822 AM CDT THU JUL 12 2012
TXC123-177-285-121400-
/O.CON.KEWX.FF.W.0047.000000T0000Z-120712T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DEWITT TX-GONZALES TX-LAVACA TX-
822 AM CDT THU JUL 12 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 AM CDT FOR WEST
CENTRAL LAVACA...SOUTH CENTRAL GONZALES AND NORTHERN DEWITT
COUNTIES...
AT 814 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT SHOWERS AND THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER THE
WARNED AREA. THE HEAVIEST RAINS WERE OCCURRING BETWEEN
CHEAPSIDE...EDGAR AND WESTHOFF. RAINFALL RATES IN THIS AREA WERE
ESTIMATED AT 3 TO 5 INCHES AN HOUR. THESE STORMS WERE DRIFTING TO
THE EAST AT LESS THAN 10 MPH.
LOCATIONS IN THE WARNING AREA INCLUDE HOCHHEIM...YOAKUM AND
CHEAPSIDE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE WHERE WATER COVERS THE ROAD. EVEN SUVS AND PICKUPS WILL
BE SWEPT AWAY BY AS LITTLE AS TWO FEET OF RUSHING WATER. TURN AROUND
DON'T DROWN.
&&
LAT...LON 2941 9704 2927 9698 2910 9715 2904 9757
2928 9762
$$479
WGUS54 KEWX 121354
FFWEWX
TXC123-177-285-121600-
/O.EXT.KEWX.FF.W.0047.000000T0000Z-120712T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
854 AM CDT THU JUL 12 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
NORTHERN DEWITT COUNTY...
SOUTH CENTRAL GONZALES COUNTY...
WEST CENTRAL LAVACA COUNTY...
* UNTIL 1100 AM CDT.
* AT 848 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
DETERMINED THAT RAINFALL ESTIMATES FROM DOPPLER RADAR INDICATE SLOW
MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED
AREA. RAINFALL RATES ARE ESTIMATED AT 2 TO 4 INCHES AN HOUR FROM
CHEAPSIDE TO CONCRETE.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CUERO...YOAKUM...CHEAPSIDE...HOCHHEIM AND WESTHOFF.
SANDIES CREEK AT WESTHOFF HAS RISEN TO 13 FEET WHICH IS ONE FOOT
ABOVE BANKFULL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE WHERE WATER COVERS THE ROAD. EVEN SUVS AND PICKUPS WILL
BE SWEPT AWAY BY AS LITTLE AS TWO FEET OF RUSHING WATER. TURN AROUND
DON'T DROWN.
&&
LAT...LON 2941 9704 2927 9698 2910 9715 2904 9757
2928 9762
$$541
WGUS74 KEWX 121602
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1102 AM CDT THU JUL 12 2012
TXC123-177-285-121610-
/O.EXP.KEWX.FF.W.0047.000000T0000Z-120712T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DEWITT TX-GONZALES TX-LAVACA TX-
1102 AM CDT THU JUL 12 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 1100 AM CDT FOR WEST
CENTRAL LAVACA...SOUTH CENTRAL GONZALES AND NORTHERN DEWITT
COUNTIES...
HEAVY RAINFALL HAS ENDED ACROSS THE WARNED AREA AND THE FLASH FLOOD
WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER RUNOFF MAY STILL RESULT
IS LOCALIZED FLOODING OF CREEKS...STREAMS AND LOW WATER CROSSINGS
OVER THE NEXT 1 TO 2 HOURS.
TXDOT INDICATES PORTIONS OF FM 776 IN DEWITT COUNTY IS CLOSED DUE TO
WATER OVER THE ROADWAY. ALSO PARTS OF FM 2067 AND FM 1116 IN GONZALES
COUNTY REMAIN CLOSED.
LAT...LON 2941 9704 2927 9698 2910 9715 2904 9757
2928 9762
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 4:54 AM CDT | Areal Flood Advisory | EWX | Fayette, Gonzales, Lavaca | 3 hr |
| Jul 12, 5:02 AM CDT | Areal Flood Advisory | EWX | DeWitt, Gonzales, Karnes, Lavaca | 3 hr |
| Jul 12, 9:23 AM CDT | Areal Flood Advisory | EWX | Lavaca | 2 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; radar from the NEXRAD Level II archive.