Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 3, NWS Brownsville, TX

March 29, 2012Willacy County, Texas

NWS Brownsville, TX issued this tornado warning at Mar 29, 2012, 6:02 PM CDT for Willacy County, Texas. It was in force for 28 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
Mar 29, 2012, 6:02 PM CDT (23:02 UTC)
Expired
Mar 29, 2012, 6:30 PM CDT
In force
28 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon

County Willacy County, TX

The radar

The Brownsville radar (KBRO), 74 km from the middle of the area, began a volume at 23:03 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

Brownsville Intl, TX (KBRO), launched 12:00Z, 11.0 hours before the alert went out and 76 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 12:00Z on 2012-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1455 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brownsville Intl, TX at 12:00Z on 2012-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.193958Sfc1 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
1455 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
665 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

882 
WFUS54 KBRO 292302
TORBRO
TXC489-292330-
/O.NEW.KBRO.TO.W.0003.120329T2302Z-120329T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
602 PM CDT THU MAR 29 2012

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

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

* UNTIL 630 PM CDT

* AT 601 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE   
TRACKING A TORNADO OVER SOUTHERN KENEDY  ABOUT 6 MILES NORTHEAST OF 
YTURRIA...MOVING SOUTHEAST AT 10 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL AREAS OF NORTHEASTERN WILLACY COUNTY...NORTH OF SAN PERLITA.


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 2651 9757 2655 9771 2660 9770 2660 9753
TIME...MOT...LOC 2301Z 311DEG 10KT 2660 9766

$$

JGG
2 follow-up statements
402 
WWUS54 KBRO 292317
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
617 PM CDT THU MAR 29 2012

TXC489-292330-
/O.CON.KBRO.TO.W.0003.000000T0000Z-120329T2330Z/
WILLACY-
617 PM CDT THU MAR 29 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR NORTHERN
WILLACY COUNTY...

AT 616 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
TRACK A TORNADO 11 MILES NORTHEAST OF RAYMONDVILLE...MOVING SOUTH AT
5 MPH.

THE TORNADO WILL BE NEAR...
RURAL NORTHERN WILLACY COUNTY NORTH OF SAN PERLITA. THIS TORNADO 
WILL REMAIN EAST OF HIGHWAY 77.

IN ADDITION TO THE THREAT OF A TORNADO...THIS STORM IS PRODUCING 
HAIL OF QUARTER TO GOLF BALL SIZE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER IN AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR 
BASEMENT.

&&


LAT...LON 2653 9759 2655 9771 2660 9770 2660 9758
TIME...MOT...LOC 2316Z 011DEG 6KT 2661 9768

$$

JGG
954 
WWUS54 KBRO 292330 RRA
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
630 PM CDT THU MAR 29 2012

TXC489-292340-
/O.EXP.KBRO.TO.W.0003.000000T0000Z-120329T2330Z/
WILLACY-
630 PM CDT THU MAR 29 2012

...THE TORNADO WARNING FOR NORTHERN WILLACY COUNTY HAS EXPIRED...

THE TORNADO WARNING HAS BEEN REPLACED BY A SEVERE THUNDERSTORM 
WARNING. THE THREAT FOR SEVERE WEATHER CONTINUES IN NORTHERN WILLACY 
COUNTY.


LAT...LON 2653 9759 2655 9771 2660 9770 2660 9758
TIME...MOT...LOC 2317Z 011DEG 6KT 2661 9768

$$

JGG

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 3:31 PM CDTSevere Thunderstorm WarningBROKenedy59 min
Mar 29, 4:18 PM CDTSpecial Marine WarningBRO87 min
Mar 29, 4:29 PM CDTSevere Thunderstorm WarningBROKenedy61 min
Mar 29, 4:37 PM CDTAreal Flood AdvisoryBROKenedy113 min
Mar 29, 5:34 PM CDTSevere Thunderstorm WarningBROBrooks, Hidalgo, Kenedy, Willacy56 min
Mar 29, 5:55 PM CDTTornado WarningBROKenedy35 min
Mar 29, 6:13 PM CDTAreal Flood AdvisoryBROBrooks, Hidalgo, Kenedy2 hr
Mar 29, 6:26 PM CDTSevere Thunderstorm WarningBROBrooks, Hidalgo, Kenedy, Willacy64 min
Mar 29, 6:29 PM CDTSevere Thunderstorm WarningBROKenedy, Willacy61 min
Mar 29, 6:59 PM CDTAreal Flood AdvisoryBROBrooks, Hidalgo, Kenedy, Starr2 hr

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.