Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 2, NWS Brownsville, TX

February 4, 2012Cameron County, Willacy County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Feb 4, 2012, 3:46 PM CST for Cameron County, Willacy County, Texas. It was in force for 59 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Feb 4, 2012, 3:46 PM CST (21:46 UTC)
Expired: Feb 4, 2012, 4:45 PM CST
In force: 59 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon

Counties Cameron County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 17 km from the middle of the area, began a volume at 21:45 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.

What was reported inside it

Time	Report	Where	Remark
Feb 4, 3:51 PM CST	FUNNEL CLOUD	San Benito, TX	PUBLIC REPORTED FUNNEL CLOUD IN SAN BENITO AT 3...20 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 12:00Z, 9.8 hours before the alert went out and 19 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: 1984 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 466 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 8 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

543 
WUUS54 KBRO 042146
SVRBRO
TXC061-489-042245-
/O.NEW.KBRO.SV.W.0002.120204T2146Z-120204T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
346 PM CST SAT FEB 4 2012

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CAMERON COUNTY IN DEEP SOUTH TEXAS.
  SOUTHEASTERN WILLACY COUNTY IN DEEP SOUTH TEXAS.

* UNTIL 445 PM CST

* AT 344 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING QUARTER SIZE
  HAIL AND DAMAGING 60 MPH WINDS...FROM 9 MILES NORTH OF LAURELES TO
  6 MILES SOUTH OF SAN BENITO...MOVING SOUTH AT 15 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  LA PALOMA BY 345 PM CST.
  LAURELES BY 405 PM CST.
  SAN PEDRO BY 410 PM CST.
  OLMITO BY 415 PM CST.
  BROWNSVILLE BY 440 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INSIDE A STURDY BUILDING. DAMAGING WIND...LARGE HAIL...
TORRENTIAL RAIN...AND DEADLY LIGHTNING ARE EXPECTED. STAY INSIDE AWAY
FROM WINDOWS UNTIL THE STORM HAS PASSED.

WIND GUSTS TO 60 MPH OR MORE WILL CAUSE SOME STRUCTURAL DAMAGE...
MAINLY TO TREES AND POWER LINES. POORLY ANCHORED ROOFS...MOBILE
HOMES...AND SHEDS ARE ALSO AT RISK.

QUARTER SIZE HAIL IS LIKELY. MOVE INDOORS IMMEDIATELY.

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 2588 9750 2589 9751 2588 9752 2593 9755
      2593 9758 2595 9759 2595 9760 2601 9765
      2602 9770 2602 9776 2609 9779 2644 9746
      2604 9730 2587 9747
TIME...MOT...LOC 2144Z 340DEG 14KT 2623 9748 2604 9767

$$

61

2 follow-up statements

715 
WWUS54 KBRO 042218
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
418 PM CST SAT FEB 4 2012

TXC061-489-042245-
/O.CON.KBRO.SV.W.0002.000000T0000Z-120204T2245Z/
CAMERON-WILLACY-
418 PM CST SAT FEB 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CST
FOR SOUTHEASTERN WILLACY AND CENTRAL CAMERON COUNTIES...

AT 320 PM CST...THE PUBLIC REPORTED A FUNNEL CLOUD IN SAN BENITO.

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS
WERE NOW ALONG A LINE EXTENDING FROM 6 MILES NORTHEAST OF LAURELES TO
5 MILES SOUTHWEST OF OLMITO...MOVING SOUTH AT 15 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  RANCHO VIEJO BY 415 PM CST.
  SAN PEDRO BY 420 PM CST.
  BAYVIEW BY 425 PM CST.
  DEL MAR HEIGHTS BY 430 PM CST.
  LOS CUATES BY 435 PM CST.
  BROWNSVILLE BY 445 PM CST.

THE SEVERE THUNDERSTORMS ARE ALSO CAPABLE OF PRODUCING...
  QUARTER SIZE HAIL.
  60 MPH WIND GUSTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INTO A STURDY BUILDING IMMEDIATELY!

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 2588 9750 2589 9751 2588 9752 2593 9755
      2593 9758 2595 9759 2595 9760 2601 9765
      2602 9770 2602 9776 2609 9779 2644 9746
      2604 9730 2587 9747
TIME...MOT...LOC 2217Z 340DEG 14KT 2615 9740 2598 9760

$$

61

122 
WWUS54 KBRO 042249
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
449 PM CST SAT FEB 4 2012

TXC061-489-042259-
/O.EXP.KBRO.SV.W.0002.000000T0000Z-120204T2245Z/
CAMERON-WILLACY-
449 PM CST SAT FEB 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WILLACY AND
CENTRAL CAMERON COUNTIES HAS EXPIRED...

AT 449 PM CST...NATIONAL WEATHER SERVICE RADAR INDICATED THE 
THUNDERSTORM HAD WEAKENED AND WAS NO LONGER SEVERE...THUS THE WARNING
HAS BEEN ALLOWED TO EXPIRE.

DOPPLER RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY
WINDS WERE STILL POSSIBLE FROM THE THUNDERSTORM.


LAT...LON 2588 9750 2589 9751 2588 9752 2593 9755
      2593 9758 2595 9759 2595 9760 2601 9765
      2602 9770 2602 9776 2609 9779 2644 9746
      2604 9730 2587 9747
TIME...MOT...LOC 2218Z 340DEG 14KT 2615 9740 2598 9760

$$

61

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 4, 4:53 AM CST	Small Craft Advisory	BRO		46 hr
Feb 4, 4:53 AM CST	Small Craft Advisory for Winds	BRO		34 hr
Feb 4, 2:27 PM CST	Areal Flood Advisory	BRO	Kenedy, Willacy	63 min
Feb 4, 2:41 PM CST	Severe Thunderstorm Warning	BRO	Cameron, Willacy	64 min
Feb 4, 3:45 PM CST	Areal Flood Advisory	BRO	Cameron, Willacy	60 min
Feb 4, 5:19 PM CST	Areal Flood Advisory	BRO	Cameron	56 min

Nearby

Severe Thunderstorm Warnings in Texas, 2012 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.