Alert archive / Texas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 21, NWS Brownsville, TX

May 27, 2009Kenedy County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at May 27, 2009, 3:19 PM CDT for Kenedy County, Texas. It was in force for 41 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 27, 2009, 3:19 PM CDT (20:19 UTC)
Expired
May 27, 2009, 4:00 PM CDT
In force
41 min
Issued by
NWS Brownsville, TX
Area
Storm-based polygon

County Kenedy County, TX

The radar

The Corpus Christi radar (KCRP), 102 km from the middle of the area, began a volume at 20:20 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, 8.3 hours before the alert went out and 97 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, Corpus Christi, TX at 12:00Z on 2009-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3147 joules per kilogram.LCLLFCEL10008507005003002001001 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, Corpus Christi, TX at 12:00Z on 2009-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
3147 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
861 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KBRO 272019
SVRBRO
TXC261-272100-
/O.NEW.KBRO.SV.W.0021.090527T2019Z-090527T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
319 PM CDT WED MAY 27 2009

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

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

* UNTIL 400 PM CDT

* AT 318 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING PENNY SIZE HAIL
  AND DAMAGING 60 MPH WINDS...FROM 23 MILES EAST OF KENEDY COUNTY TO
  CENTRAL KENEDY COUNTY...MOVING SOUTH AT 25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  NORIAS BY 320 PM CDT.
  RUDOLPH BY 340 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

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 2686 9739 2688 9755 2661 9746 2661 9786
      2684 9786 2710 9745 2698 9746 2697 9756
      2688 9752 2695 9748 2687 9746 2688 9739
      2714 9739 2661 9730
TIME...MOT...LOC 2018Z 016DEG 21KT 2693 9741 2678 9769

$$

61
1 follow-up statement
000 
WWUS54 KBRO 272107
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
407 PM CDT WED MAY 27 2009

TXC261-272117-
/O.EXP.KBRO.SV.W.0021.000000T0000Z-090527T2100Z/
KENEDY-
407 PM CDT WED MAY 27 2009

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN KENEDY COUNTY HAS
EXPIRED...

AT 407 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED THE 
THUNDERSTORM THAT PROMPTED THE WARNING...HAD EXITED THE WARNED 
AREA...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 2686 9739 2688 9755 2661 9746 2661 9786
      2684 9786 2710 9745 2698 9746 2697 9756
      2688 9752 2695 9748 2687 9746 2688 9739
      2714 9739 2661 9730
TIME...MOT...LOC 2019Z 016DEG 21KT 2693 9741 2678 9769

$$

61

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 1:37 PM CDTSpecial Marine WarningBRO113 min
May 27, 2:26 PM CDTSevere Thunderstorm WarningBROKenedy64 min
May 27, 2:38 PM CDTAreal Flood AdvisoryBROKenedy82 min
May 27, 3:28 PM CDTSpecial Marine WarningBRO92 min
May 27, 3:29 PM CDTSpecial Marine WarningBRO61 min
May 27, 4:30 PM CDTAreal Flood AdvisoryBROCameron90 min
May 27, 4:31 PM CDTSpecial Marine WarningBRO89 min
May 27, 4:41 PM CDTSevere Thunderstorm WarningBROCameron34 min
May 27, 4:58 PM CDTSpecial Marine WarningBRO32 min
May 27, 5:14 PM CDTSevere Thunderstorm WarningBROCameron46 min
May 27, 5:24 PM CDTSpecial Marine WarningBRO51 min
May 27, 5:25 PM CDTSpecial Marine WarningBRO65 min
May 27, 5:53 PM CDTSpecial Marine WarningBRO97 min

Nearby

Severe Thunderstorm Warnings in Texas, 2009Every severe thunderstorm warning in 2009

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.