Alert archive / Texas / Special Weather Statements in 2012
Special Weather Statement, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this special weather statement at Dec 9, 2012, 5:03 PM CST for Lavaca County, Texas. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Dec 9, 2012, 5:03 PM CST (23:03 UTC)
- Expired
- Dec 9, 2012, 5:45 PM CST
- In force
- 42 min
- Issued by
- NWS Austin/San Antonio, TX
County Lavaca County, TX
The radar
The Austin/San Antonio radar (KEWX), 83 km from the middle of the area, began a volume at 23:05 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 12:00Z, 11.1 hours before the alert went out and 199 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
- 1203 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 462 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.2
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this special weather statement went out at Dec 9, 3:35 PM CST, 1 hour 28 minutes earlier.
Area forecast discussion, Dec 9, 3:35 PM CST, 1 hour 28 minutes before
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</html>Hazardous weather outlook, Dec 9, 5:02 AM CST, 12 hours 1 minute before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 502 AM CST SUN DEC 9 2012 TXZ171>173-183>194-202>209-217>225-228-101115- LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA- GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE- MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA- FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT- 502 AM CST SUN DEC 9 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT... A STRONG COLD FRONT WILL MOVE SOUTHWARD ACROSS THE REGION TONIGHT. THERE IS A SLIGHT RISK OF STRONG TO SEVERE THUNDERSTORMS EARLY THIS EVENING INTO TONIGHT MAINLY EAST OF THE I-35 CORRIDOR. THE SEVERE WEATHER THREATS WILL BE LARGE HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... A DRY AND COLD CANADIAN AIRMASS WILL OVERSPREAD THE REGION FOLLOWING THE FRONTAL PASSAGE. A WIDESPREAD FREEZE WILL OCCUR TUESDAY MORNING WITH A HARD FREEZE ACROSS THE HILL COUNTRY. A FREEZE WARNING WILL BE NECESSARY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY THIS EVENING.
In the hours before
Special weather statement, Dec 9, 3:51 PM CST, 1 hour 12 minutes before
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</html>Local storm report, Dec 9, 5:03 PM CST, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
503 PM CST SUN DEC 09 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0501 PM HAIL 5 W BERTRAM 30.74N 98.14W
12/09/2012 M0.50 INCH BURNET TX AMATEUR RADIO
PEA TO ONE HALF INCH HAIL NO DURATION
&&
EVENT NUMBER EWX1200508
JPBSpecial weather statement, Dec 9, 5:03 PM CST, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 503 PM CST SUN DEC 9 2012 TXZ209-223>225-092345- DE WITT-FAYETTE-GONZALES-LAVACA- 503 PM CST SUN DEC 9 2012 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN LAVACA... SOUTHEASTERN GONZALES...SOUTHERN FAYETTE AND NORTHERN DEWITT COUNTIES UNTIL 545 PM CST... AT 500 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM NEAR CHEAPSIDE...OR 16 MILES SOUTH OF GONZALES... MOVING NORTHEAST AT 20 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... SHINER... MOULTON... HALLETTSVILLE... FLATONIA... CHEAPSIDE... HOCHHEIM... HAMON... DREYER... GLAZE CITY... DILWORTH... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. THE HEAVY RAIN MAY FLOOD LOW LYING AREAS SUCH AS DITCHES...LOW WATER CROSSINGS AND UNDERPASSES. DO NOT DRIVE YOUR VEHICLE ACROSS FLOODED ROADWAYS. LAT...LON 2979 9708 2952 9678 2916 9747 2930 9760 TIME...MOT...LOC 2302Z 230DEG 18KT 2929 9746
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 9, 4:53 PM CST | Special Weather Statement | EWX | Burnet | 52 min |
| Dec 9, 5:21 PM CST | Special Weather Statement | EWX | Lee | 39 min |
| Dec 9, 5:30 PM CST | Special Weather Statement | EWX | Lavaca | 45 min |
Nearby
Special Weather Statements in Texas, 2012Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.