Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 23, NWS Brownsville, TX

May 11, 2012Cameron County, Willacy County, Texas

NWS Brownsville, TX issued this tornado warning at May 11, 2012, 3:41 AM CDT for Cameron County, Willacy County, Texas. It was in force for 34 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
May 11, 2012, 3:41 AM CDT (08:41 UTC)
Expired
May 11, 2012, 4:15 AM CDT
In force
34 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon

Counties Cameron County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 38 km from the middle of the area, began a volume at 08:44 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.

IssuedProductOfficeLasted
May 10, 7:50 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 00:00Z, 8.7 hours before the alert went out and 40 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, Brownsville Intl, TX at 00:00Z on 2012-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2994 joules per kilogram.LCLEL10008507005003002001001 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, Brownsville Intl, TX at 00:00Z on 2012-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939587897Sfc1 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
2994 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
687 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
1.5
Supercell composite
7.7

Open this sounding in Storm Lab

The text

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

302 
WFUS54 KBRO 110841
TORBRO
TXC061-489-110915-
/O.NEW.KBRO.TO.W.0023.120511T0841Z-120511T0915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
341 AM CDT FRI MAY 11 2012

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CAMERON COUNTY IN DEEP SOUTH TEXAS.
  SOUTHEASTERN WILLACY COUNTY IN DEEP SOUTH TEXAS.

* UNTIL 415 AM CDT

* AT 341 AM CDT...A TRAINED SPOTTER REPORTED A TORNADO NEAR RIO 
HONDO. THIS TORNADO WAS PRODUCING DEBRIS. 

* THE TORNADO WILL BE NEAR...
  LOZANO BY 340 AM CDT.
  LA LEONA BY 405 AM CDT.
  BUENA VISTA BY 410 AM CDT.
  ARROYO CITY BY 415 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR
HIGHER...HAIL THE SIZE OF PENNIES OR LARGER...AND ANY WIND DAMAGE TO
YOUR NATIONAL WEATHER SERVICE IN BROWNSVILLE BY CALLING 956-504-1432.

&&

LAT...LON 2615 9751 2618 9756 2624 9759 2642 9746
      2631 9733 2630 9734 2627 9734 2628 9732
      2627 9729 2627 9730
TIME...MOT...LOC 0841Z 225DEG 16KT 2620 9754

$$

JGG
3 follow-up statements
639 
WWUS54 KBRO 110851
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
351 AM CDT FRI MAY 11 2012

TXC061-489-110915-
/O.CON.KBRO.TO.W.0023.000000T0000Z-120511T0915Z/
CAMERON-WILLACY-
351 AM CDT FRI MAY 11 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 AM CDT FOR
SOUTHEASTERN WILLACY AND NORTHERN CAMERON COUNTIES...

AT 350 AM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
TRACK A TORNADO 8 MILES NORTH OF LAURELES...MOVING NORTHEAST AT 20 
MPH. THIS TORNADO IS BETWEEN MONTE GRANDE AND LA TINA...NEAR FARM TO 
MARKET 106. A TORNADO HAS BEEN CONFIRMED WITH THIS STORM.

THE TORNADO WILL BE NEAR...
  LAS YESCAS.
  MONTE GRANDE.
  LA LEONA.
  ARROYO CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR
HIGHER...HAIL THE SIZE OF PENNIES OR LARGER...AND ANY WIND DAMAGE TO
YOUR NATIONAL WEATHER SERVICE IN BROWNSVILLE BY CALLING 956-504-1432.

&&


LAT...LON 2619 9745 2621 9753 2625 9756 2642 9746
      2631 9733 2630 9734 2627 9734 2628 9732
      2627 9729 2627 9730
TIME...MOT...LOC 0850Z 225DEG 16KT 2622 9749

$$

JGG
373 
WWUS54 KBRO 110901
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
401 AM CDT FRI MAY 11 2012

TXC061-489-110915-
/O.CON.KBRO.TO.W.0023.000000T0000Z-120511T0915Z/
CAMERON-WILLACY-
401 AM CDT FRI MAY 11 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 AM CDT FOR
SOUTHEASTERN WILLACY AND NORTHERN CAMERON COUNTIES...

AT 401 AM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
TRACK A TORNADO 11 MILES NORTH OF LAURELES...MOVING NORTHEAST AT 25
MPH.

THE TORNADO WILL BE NEAR...
  LA LEONA.
  ARROYO CITY.
  LAGUNA ATASCOSA WILDLIFE REFUGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR
HIGHER...HAIL THE SIZE OF PENNIES OR LARGER...AND ANY WIND DAMAGE TO
YOUR NATIONAL WEATHER SERVICE IN BROWNSVILLE BY CALLING 956-504-1432.

&&


LAT...LON 2623 9740 2624 9746 2631 9750 2642 9746
      2631 9733 2630 9734 2627 9734 2628 9732
      2627 9729 2627 9730
TIME...MOT...LOC 0901Z 227DEG 21KT 2627 9743

$$

JGG
792 
WWUS54 KBRO 110912
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
412 AM CDT FRI MAY 11 2012

TXC061-489-110922-
/O.EXP.KBRO.TO.W.0023.000000T0000Z-120511T0915Z/
CAMERON-WILLACY-
412 AM CDT FRI MAY 11 2012

...THE TORNADO WARNING FOR SOUTHEASTERN WILLACY AND NORTHERN CAMERON
COUNTIES WILL EXPIRE AT 415 AM CDT...

THE TORNADO CIRCULATION HAS MOVED INTO THE CENTRAL LAGUNA MADRE.


LAT...LON 2623 9740 2624 9746 2631 9750 2642 9746
      2631 9733 2630 9734 2627 9734 2628 9732
      2627 9729 2627 9730
TIME...MOT...LOC 0912Z 227DEG 21KT 2631 9738

$$

JGG

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 9:37 PM CDTSevere Thunderstorm WarningBROZapata53 min
May 10, 10:34 PM CDTSevere Thunderstorm WarningBROJim Hogg, Starr, Zapata71 min
May 10, 10:56 PM CDTTornado WarningBROZapata34 min
May 10, 11:18 PM CDTAreal Flood AdvisoryBROJim Hogg, Zapata57 min
May 10, 11:24 PM CDTTornado WarningBROZapata36 min
May 10, 11:33 PM CDTTornado WarningBROJim Hogg, Starr42 min
May 10, 11:36 PM CDTFlash Flood WarningBROJim Hogg, Zapata84 min
May 10, 11:41 PM CDTTornado WarningBROJim Hogg, Zapata24 min
May 10, 11:44 PM CDTSevere Thunderstorm WarningBROBrooks, Hidalgo, Jim Hogg, Starr, Zapata76 min
May 11, 12:01 AM CDTTornado WarningBROJim Hogg29 min
May 11, 12:13 AM CDTTornado WarningBROBrooks, Jim Hogg47 min
May 11, 12:47 AM CDTSevere Thunderstorm WarningBROBrooks, Hidalgo, Jim Hogg, Kenedy, Starr, Willacy88 min
May 11, 1:07 AM CDTAreal Flood AdvisoryBROStarr53 min
May 11, 1:39 AM CDTSpecial Marine WarningBRO2 hr
May 11, 1:58 AM CDTAreal Flood AdvisoryBROHidalgo, Starr62 min
May 11, 2:14 AM CDTSpecial Marine WarningBRO2 hr
May 11, 2:49 AM CDTSevere Thunderstorm WarningBROCameron41 min
May 11, 3:14 AM CDTTornado WarningBROCameron31 min
May 11, 3:41 AM CDTSpecial Marine WarningBRO2 hr
May 11, 3:53 AM CDTSevere Thunderstorm WarningBROHidalgo52 min
May 11, 4:10 AM CDTSevere Thunderstorm WarningBROCameron38 min
May 11, 4:20 AM CDTSpecial Marine WarningBRO115 min
May 11, 4:29 AM CDTTornado WarningBROCameron31 min
May 11, 4:47 AM CDTTornado WarningBROCameron28 min
May 11, 6:11 AM CDTSpecial Marine WarningBRO64 min
May 11, 6:30 AM CDTTornado WarningBROCameron30 min
May 11, 6:45 AM CDTSpecial Marine WarningBRO60 min
May 11, 6:58 AM CDTTornado WarningBROCameron32 min
May 11, 7:12 AM CDTSpecial Marine WarningBRO93 min
May 11, 11:48 AM CDTSpecial Marine WarningBRO57 min
May 11, 12:37 PM CDTSpecial Marine WarningBRO53 min
May 11, 1:27 PM CDTSpecial Marine WarningBRO63 min
May 11, 2:01 PM CDTSpecial Marine WarningBRO59 min
May 11, 2:26 PM CDTSpecial Marine WarningBRO49 min
May 11, 3:25 PM CDTSpecial Marine WarningBRO50 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.