Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 7, NWS Brownsville, TX

March 29, 20124 counties in Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Mar 29, 2012, 5:34 PM CDT for 4 counties in Texas. It was in force for 56 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, 5:34 PM CDT (22:34 UTC)
Expired: Mar 29, 2012, 6:30 PM CDT
In force: 56 min
Issued by: NWS Brownsville, TX
Area: Storm-based polygon

Counties Brooks County, TX, Hidalgo County, TX, Kenedy County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 104 km from the middle of the area, began a volume at 22:35 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, 10.6 hours before the alert went out and 102 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: 1823 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 626 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

534 
WUUS54 KBRO 292234
SVRBRO
TXC047-215-261-489-292330-
/O.NEW.KBRO.SV.W.0007.120329T2234Z-120329T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
534 PM CDT THU MAR 29 2012

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BROOKS COUNTY IN DEEP SOUTH TEXAS.
  NORTHERN HIDALGO COUNTY IN DEEP SOUTH TEXAS.
  KENEDY COUNTY IN DEEP SOUTH TEXAS.
  NORTHEASTERN WILLACY COUNTY IN DEEP SOUTH TEXAS.

* UNTIL 630 PM CDT

* AT 534 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL AND
  DAMAGING 60 MPH WINDS...17 MILES NORTHWEST OF PORT MANSFIELD...
  MOVING SOUTHEAST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  RUDOLPH.
  YTURRIA.
  PORT MANSFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE
INDOORS IMMEDIATELY. DO NOT USE ELECTRICAL APPLIANCES OR TELEPHONES.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. MOVE TO A PLACE OF SAFETY...AN INTERIOR ROOM IN THE LOWEST
FLOOR OF YOUR HOUSE OR BUSINESS.

THIS IS A DANGEROUS STORM! MOVE INTO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING...AWAY FROM WINDOWS. COVER YOUR HEAD WITH
PILLOWS OR CUSHIONS.

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 2696 9745 2678 9745 2683 9747 2685 9755
      2684 9755 2680 9747 2676 9746 2677 9745
      2645 9741 2666 9818 2706 9806 2720 9748
TIME...MOT...LOC 2234Z 335DEG 6KT 2665 9767

$$

61

2 follow-up statements

954 
WWUS54 KBRO 292245
SVSBRO

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

TXC047-215-261-489-292330-
/O.CON.KBRO.SV.W.0007.000000T0000Z-120329T2330Z/
HIDALGO-BROOKS-WILLACY-KENEDY-
545 PM CDT THU MAR 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR KENEDY...NORTHEASTERN WILLACY...SOUTHEASTERN BROOKS AND NORTHERN
HIDALGO COUNTIES...

AT 542 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM 19 MILES SOUTH OF SARITA...MOVING 
SOUTHEAST AT 5 MPH AND A SEVERE THUNDERSTORM 17 MILES NORTHWEST OF 
PORT MANSFIELD...MOVING SOUTHEAST AT 5 MPH..

THE SEVERE THUNDERSTORM WILL BE NEAR...
  ARMSTRONG.
  NORIAS.
  RUDOLPH.
  YTURRIA.
  PORT MANSFIELD.

THE SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING...
  QUARTER SIZE HAIL.
  60 MPH WIND GUSTS.
  EXCESSIVE AND DEADLY CLOUD-TO-GROUND LIGHTNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM.

IF YOU ARE DRIVING AND CAN REACH A STURDY BUILDING SAFELY...DO SO. IF
THERE IS NO STURDY BUILDING NEARBY AND YOU CAN SAFELY DRIVE AWAY FROM
THE TORNADO...DO SO. OTHERWISE...IF YOU SEE FLYING DEBRIS...PARK YOUR
VEHICLE. CLOSE WINDOWS...LEAVE SEATBELTS ON...GET LOWER THAN THE
DASHBOARD...AND COVER YOUR HEAD...PREFERABLY WITH BLANKETS OR
PILLOWS. IF THERE IS NO DEBRIS...LEAVE THE VEHICLE AND GO INTO A
DITCH OR LOW SPOT...BUT WATCH FOR RISING WATERS.

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 2696 9745 2678 9745 2683 9747 2685 9755
      2684 9755 2680 9747 2676 9746 2677 9745
      2645 9741 2666 9818 2706 9806 2720 9748
TIME...MOT...LOC 2242Z 296DEG 6KT 2694 9776

$$

61

420 
WWUS54 KBRO 292318
SVSBRO

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

TXC047-215-261-489-292330-
/O.CON.KBRO.SV.W.0007.000000T0000Z-120329T2330Z/
HIDALGO-BROOKS-WILLACY-KENEDY-
618 PM CDT THU MAR 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR KENEDY...NORTHEASTERN WILLACY...SOUTHEASTERN BROOKS AND NORTHERN
HIDALGO COUNTIES...

AT 618 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM 13 MILES NORTHEAST OF SAN MANUEL...
MOVING SOUTHWEST AT 10 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  JULIAN.

THE SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING...
  QUARTER SIZE HAIL.
  60 MPH WIND GUSTS.
  EXCESSIVE AND DEADLY CLOUD-TO-GROUND LIGHTNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. MOVE TO A PLACE OF SAFETY...AN INTERIOR ROOM IN THE LOWEST
FLOOR OF YOUR HOUSE OR BUSINESS.

IF YOU ARE DRIVING AND CAN REACH A STURDY BUILDING SAFELY...DO SO. IF
THERE IS NO STURDY BUILDING NEARBY AND YOU CAN SAFELY DRIVE AWAY FROM
THE TORNADO...DO SO. OTHERWISE...IF YOU SEE FLYING DEBRIS...PARK YOUR
VEHICLE. CLOSE WINDOWS...LEAVE SEATBELTS ON...GET LOWER THAN THE
DASHBOARD...AND COVER YOUR HEAD...PREFERABLY WITH BLANKETS OR
PILLOWS. IF THERE IS NO DEBRIS...LEAVE THE VEHICLE AND GO INTO A
DITCH OR LOW SPOT...BUT WATCH FOR RISING WATERS.

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 2696 9745 2678 9745 2683 9747 2685 9755
      2684 9755 2680 9747 2676 9746 2677 9745
      2645 9741 2666 9818 2706 9806 2720 9748
TIME...MOT...LOC 2318Z 044DEG 8KT 2672 9799

$$

61

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 29, 3:31 PM CDT	Severe Thunderstorm Warning	BRO	Kenedy	59 min
Mar 29, 4:18 PM CDT	Special Marine Warning	BRO		87 min
Mar 29, 4:29 PM CDT	Severe Thunderstorm Warning	BRO	Kenedy	61 min
Mar 29, 4:37 PM CDT	Areal Flood Advisory	BRO	Kenedy	113 min
Mar 29, 5:55 PM CDT	Tornado Warning	BRO	Kenedy	35 min
Mar 29, 6:02 PM CDT	Tornado Warning	BRO	Willacy	28 min
Mar 29, 6:13 PM CDT	Areal Flood Advisory	BRO	Brooks, Hidalgo, Kenedy	2 hr
Mar 29, 6:26 PM CDT	Severe Thunderstorm Warning	BRO	Brooks, Hidalgo, Kenedy, Willacy	64 min
Mar 29, 6:29 PM CDT	Severe Thunderstorm Warning	BRO	Kenedy, Willacy	61 min
Mar 29, 6:59 PM CDT	Areal Flood Advisory	BRO	Brooks, Hidalgo, Kenedy, Starr	2 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.