Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 9, NWS Brownsville, TX

March 29, 2012Kenedy County, Willacy County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Mar 29, 2012, 6:29 PM CDT for Kenedy County, Willacy County, Texas. It was in force for 61 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, 6:29 PM CDT (23:29 UTC)
Expired
Mar 29, 2012, 7:30 PM CDT
In force
61 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon

Counties Kenedy County, TX, Willacy County, TX

The radar

The Brownsville radar (KBRO), 82 km from the middle of the area, began a volume at 23:30 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, 11.5 hours before the alert went out and 84 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.

520 
WUUS54 KBRO 292329
SVRBRO
TXC261-489-300030-
/O.NEW.KBRO.SV.W.0009.120329T2329Z-120330T0030Z/

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

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN KENEDY COUNTY IN DEEP SOUTH TEXAS.
  NORTHERN WILLACY COUNTY IN DEEP SOUTH TEXAS.

* UNTIL 730 PM CDT

* AT 628 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED 
A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL 
AND DAMAGING 60 MPH WINDS...OVER SOUTHERN KENEDY COUNTY...MOVING 
SOUTH AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  YTURRIA....AND HIGHWAY 77 NEAR THE KENEDY AND WILLACY COUNTY LINE.

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 2665 9749 2649 9752 2648 9778 2660 9779
      2667 9777 2670 9771 2673 9763
TIME...MOT...LOC 2328Z 355DEG 5KT 2660 9768

$$

JGG
3 follow-up statements
757 
WWUS54 KBRO 292349
SVSBRO

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

TXC261-489-300030-
/O.CON.KBRO.SV.W.0009.000000T0000Z-120330T0030Z/
WILLACY-KENEDY-
649 PM CDT THU MAR 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR SOUTHERN KENEDY AND NORTHERN WILLACY COUNTIES...

AT 649 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM 11 MILES NORTHEAST OF RAYMONDVILLE...
MOVING SOUTH AT 5 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  YTURRIA.
  SAN PERLITA.

THE SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING...
  QUARTER SIZE HAIL.
  60 MPH WIND GUSTS.

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 2665 9749 2649 9752 2648 9778 2660 9779
      2667 9777 2670 9771 2673 9763
TIME...MOT...LOC 2349Z 358DEG 5KT 2659 9766

$$

JGG
241 
WWUS54 KBRO 300010
SVSBRO

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

TXC261-489-300030-
/O.CON.KBRO.SV.W.0009.000000T0000Z-120330T0030Z/
WILLACY-KENEDY-
710 PM CDT THU MAR 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT 
FOR FAR SOUTHERN KENEDY AND NORTHERN WILLACY COUNTIES...

AT 710 PM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM 9 MILES NORTHEAST OF RAYMONDVILLE...
MOVING SOUTH AT 5 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  YTURRIA.
  SAN PERLITA.

THE SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING...

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 2663 9775 2665 9770 2666 9762 2665 9749
      2649 9752 2648 9778 2660 9779
TIME...MOT...LOC 0010Z 358DEG 5KT 2657 9767

$$

JGG
429 
WWUS54 KBRO 300029
SVSBRO

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

TXC261-489-300039-
/O.EXP.KBRO.SV.W.0009.000000T0000Z-120330T0030Z/
WILLACY-KENEDY-
729 PM CDT THU MAR 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN KENEDY AND NORTHERN
WILLACY COUNTIES WILL EXPIRE AT 730 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED TO BELOW SEVERE 
LIMITS BUT REMAINS CAPABLE OF PRODUCING HAIL TO AROUND NICKEL SIZE 
AND GUSTY WINDS FOR AREAS MAINLY NEAR AND NORTHEAST OF RAYMONDVILLE.


LAT...LON 2663 9775 2665 9770 2666 9762 2665 9749
      2649 9752 2648 9778 2660 9779
TIME...MOT...LOC 0029Z 358DEG 5KT 2654 9767

$$

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, 6:02 PM CDTTornado WarningBROWillacy28 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, 6:59 PM CDTAreal Flood AdvisoryBROBrooks, Hidalgo, Kenedy, Starr2 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2012Every 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.