Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 9, NWS Corpus Christi, TX

April 20, 2012Jim Wells County, Kleberg County, Nueces County, Texas

NWS Corpus Christi, TX issued this tornado warning at Apr 20, 2012, 3:35 PM CDT for Jim Wells County, Kleberg County, Nueces County, Texas. It was in force for 40 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: Apr 20, 2012, 3:35 PM CDT (20:35 UTC)
Expired: Apr 20, 2012, 4:15 PM CDT
In force: 40 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon

Counties Jim Wells County, TX, Kleberg County, TX, Nueces County, TX

The radar

The Corpus Christi radar (KCRP), 39 km from the middle of the area, began a volume at 20:39 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 20, 2:29 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 8.6 hours before the alert went out and 56 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 633 J/kg
Mixed-layer CIN: -475 J/kg
Mixed-layer LCL: 1213 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

434 
WFUS54 KCRP 202035
TORCRP
TXC249-273-355-202115-
/O.NEW.KCRP.TO.W.0009.120420T2035Z-120420T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
335 PM CDT FRI APR 20 2012

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL JIM WELLS COUNTY IN SOUTH CENTRAL TEXAS...
  EXTREME NORTHWESTERN KLEBERG COUNTY IN SOUTH CENTRAL TEXAS...
  SOUTHWESTERN NUECES COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 415 PM CDT

* AT 334 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 14 MILES
  NORTHWEST OF BISHOP...OR 6 MILES SOUTHEAST OF ALICE...MOVING
  SOUTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BISHOP...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT 
FRIDAY EVENING FOR SOUTH TEXAS.

&&

LAT...LON 2782 9791 2780 9770 2756 9779 2768 9811
      2778 9803
TIME...MOT...LOC 2034Z 292DEG 22KT 2771 9794

$$


MB

1 follow-up statement

755 
WWUS54 KCRP 202055
SVSCRP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
355 PM CDT FRI APR 20 2012

TXC249-273-355-202115-
/O.CON.KCRP.TO.W.0009.000000T0000Z-120420T2115Z/
JIM WELLS-KLEBERG-NUECES-
355 PM CDT FRI APR 20 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR
SOUTHWESTERN NUECES...EXTREME NORTHWESTERN KLEBERG AND EAST CENTRAL
JIM WELLS COUNTIES...

AT 355 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 7 MILES WEST OF 
BISHOP...OR 8 MILES NORTHWEST OF KINGSVILLE...MOVING SOUTHEAST AT 25 
MPH.

* LOCATIONS IMPACTED INCLUDE...
  BISHOP...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE EASILY
TOSSED AROUND BY TORNADO WINDS. IF YOU ARE CAUGHT IN THE PATH OF A
TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO SAFE
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT AND COVER
YOUR HEAD.

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.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT 
FRIDAY EVENING FOR SOUTH TEXAS.

&&

LAT...LON 2770 9794 2774 9781 2772 9773 2756 9779
      2762 9796
TIME...MOT...LOC 2055Z 292DEG 22KT 2761 9789

$$


MB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 2:01 PM CDT	Severe Thunderstorm Warning	CRP	Victoria	59 min
Apr 20, 3:01 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Kleberg	44 min
Apr 20, 3:04 PM CDT	Severe Thunderstorm Warning	CRP	Live Oak	41 min
Apr 20, 3:18 PM CDT	Severe Thunderstorm Warning	CRP	Aransas, Refugio, San Patricio	42 min
Apr 20, 3:24 PM CDT	Severe Thunderstorm Warning	CRP	Jim Wells, Kleberg, Nueces, San Patricio	66 min
Apr 20, 3:34 PM CDT	Small Craft Advisory	CRP		29 hr
Apr 20, 3:42 PM CDT	Severe Thunderstorm Warning	CRP	McMullen	48 min
Apr 20, 3:44 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Kleberg	61 min
Apr 20, 3:49 PM CDT	Severe Thunderstorm Warning	CRP	Bee, Live Oak	41 min
Apr 20, 3:50 PM CDT	Severe Thunderstorm Warning	CRP	Aransas, Nueces, Refugio, San Patricio	55 min
Apr 20, 3:52 PM CDT	Severe Thunderstorm Warning	CRP	Calhoun, Refugio	38 min
Apr 20, 4:00 PM CDT	Special Marine Warning	CRP		2 hr
Apr 20, 4:08 PM CDT	Severe Thunderstorm Warning	CRP	Live Oak, McMullen	37 min
Apr 20, 4:17 PM CDT	Tornado Warning	CRP	Nueces	43 min
Apr 20, 4:21 PM CDT	Severe Thunderstorm Warning	CRP	Calhoun, Refugio	39 min
Apr 20, 4:46 PM CDT	Severe Thunderstorm Warning	CRP	Kleberg	44 min
Apr 20, 4:48 PM CDT	Severe Thunderstorm Warning	CRP	Kleberg, Nueces	42 min
Apr 20, 5:09 PM CDT	Severe Thunderstorm Warning	CRP	Kleberg, Nueces	51 min
Apr 20, 5:14 PM CDT	Special Marine Warning	CRP		2 hr

Nearby

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