Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 56, NWS Corpus Christi, TX

September 29, 2012Calhoun County, Texas

NWS Corpus Christi, TX issued this tornado warning at Sep 29, 2012, 4:06 PM CDT for Calhoun County, Texas. It was in force for 54 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
Sep 29, 2012, 4:06 PM CDT (21:06 UTC)
Expired
Sep 29, 2012, 5:00 PM CDT
In force
54 min
Issued by
NWS Corpus Christi, TX
Area
Storm-based polygon

County Calhoun County, TX

The radar

The Corpus Christi radar (KCRP), 135 km from the middle of the area, began a volume at 21:09 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, 9.1 hours before the alert went out and 128 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.

Skew-T log-pSkew-T log-p diagram, Corpus Christi, TX at 12:00Z on 2012-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1751 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2012-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1751 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
449 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

590 
WFUS54 KCRP 292106
TORCRP
TXC057-292200-
/O.NEW.KCRP.TO.W.0056.120929T2106Z-120929T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
406 PM CDT SAT SEP 29 2012

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CALHOUN COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 500 PM CDT

* AT 404 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO NEAR
  GREEN LAKE...OR 11 MILES WEST OF PORT LAVACA...MOVING NORTHEAST AT
  15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  KAMAY...
  PORT LAVACA...
  ALAMO BEACH...
  POINT COMFORT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 2856 9650 2852 9651 2848 9681 2860 9688
      2870 9665 2865 9660 2860 9660 2860 9658
      2870 9658 2871 9644 2873 9641 2871 9639
      2867 9640 2866 9637 2865 9641 2862 9636
TIME...MOT...LOC 2106Z 247DEG 13KT 2858 9678

$$

TMT
2 follow-up statements
345 
WWUS54 KCRP 292121
SVSCRP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
421 PM CDT SAT SEP 29 2012

TXC057-292200-
/O.CON.KCRP.TO.W.0056.000000T0000Z-120929T2200Z/
CALHOUN-
421 PM CDT SAT SEP 29 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR NORTHERN
CALHOUN COUNTY...

AT 418 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION. THIS TORNADO WAS LOCATED 
NEAR KAMAY...OR 8 MILES WEST OF PORT LAVACA...MOVING EAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  KAMAY...
  PORT LAVACA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP 
SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE 
INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM 
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 2856 9650 2852 9651 2848 9681 2860 9688
      2870 9665 2865 9660 2860 9660 2860 9658
      2870 9658 2871 9644 2873 9641 2871 9639
      2867 9640 2866 9637 2865 9641 2862 9636
TIME...MOT...LOC 2121Z 251DEG 9KT 2859 9675

$$

TMT
107 
WWUS54 KCRP 292144
SVSCRP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
444 PM CDT SAT SEP 29 2012

TXC057-292200-
/O.CON.KCRP.TO.W.0056.000000T0000Z-120929T2200Z/
CALHOUN-
444 PM CDT SAT SEP 29 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR NORTHERN
CALHOUN COUNTY...

AT 442 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 3 MILES SOUTHEAST OF 
KAMAY...OR 5 MILES WEST OF PORT LAVACA...MOVING EAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PORT LAVACA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

&&

LAT...LON 2856 9650 2852 9651 2848 9681 2860 9688
      2870 9665 2865 9660 2860 9660 2860 9658
      2870 9658 2871 9644 2873 9641 2871 9639
      2867 9640 2866 9637 2865 9641 2862 9636
TIME...MOT...LOC 2143Z 248DEG 10KT 2861 9669

$$

TMT

The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 28, 9:43 PM CDTSevere Thunderstorm WarningCRPWebb62 min
Sep 28, 9:54 PM CDTAreal Flood AdvisoryCRPWebb111 min
Sep 28, 10:39 PM CDTFlash Flood WarningCRPWebb3 hr
Sep 28, 11:34 PM CDTSevere Thunderstorm WarningCRPWebb56 min
Sep 29, 12:26 AM CDTSevere Thunderstorm WarningCRPLa Salle, Webb49 min
Sep 29, 1:12 AM CDTAreal Flood AdvisoryCRPLa Salle, Webb48 min
Sep 29, 1:22 AM CDTSevere Thunderstorm WarningCRPLa Salle, Live Oak, McMullen53 min
Sep 29, 1:29 AM CDTFlash Flood WarningCRPWebb91 min
Sep 29, 2:04 AM CDTRiver Flood WarningCRPWebb67 hr
Sep 29, 2:05 AM CDTAreal Flood AdvisoryCRPDuval, La Salle, Live Oak, McMullen, Webb55 min
Sep 29, 2:09 AM CDTSevere Thunderstorm WarningCRPBee, Live Oak, McMullen51 min
Sep 29, 2:36 AM CDTFlash Flood WarningCRPLive Oak, McMullen96 min
Sep 29, 2:56 AM CDTAreal Flood AdvisoryCRPBee, Duval, Jim Wells, Live Oak, McMullen, Webb64 min
Sep 29, 3:26 AM CDTAreal Flood AdvisoryCRPBee, Goliad, Live Oak64 min
Sep 29, 4:06 AM CDTSpecial Marine WarningCRP84 min
Sep 29, 5:17 AM CDTAreal Flood WarningCRPGoliad, Victoria117 min
Sep 29, 5:27 AM CDTSpecial Marine WarningCRP93 min
Sep 29, 6:59 AM CDTSpecial Marine WarningCRP61 min
Sep 29, 2:43 PM CDTAreal Flood AdvisoryCRPLive Oak62 min
Sep 29, 3:11 PM CDTSmall Craft AdvisoryCRP40 hr
Sep 29, 3:50 PM CDTSpecial Marine WarningCRP25 min
Sep 29, 4:09 PM CDTSpecial Marine WarningCRP51 min
Sep 29, 4:52 PM CDTTornado WarningCRPCalhoun38 min
Sep 29, 5:02 PM CDTSpecial Marine WarningCRP43 min
Sep 29, 5:08 PM CDTSpecial Marine WarningCRP37 min
Sep 29, 5:11 PM CDTTornado WarningCRPCalhoun34 min
Sep 29, 5:38 PM CDTAreal Flood AdvisoryCRPCalhoun52 min
Sep 29, 5:45 PM CDTSpecial Marine WarningCRP30 min
Sep 29, 5:51 PM CDTTornado WarningCRPCalhoun54 min
Sep 29, 6:32 PM CDTAreal Flood AdvisoryCRPCalhoun58 min
Sep 29, 6:46 PM CDTTornado WarningCRPCalhoun14 min

Nearby

Tornado Warnings in Texas, 2012Every tornado warning in 2012Tornadoes 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.