Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 51, NWS Brownsville, TX

June 21, 2001Kenedy County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Jun 21, 2001, 3:01 PM CDT for Kenedy County, Texas. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jun 21, 2001, 3:01 PM CDT (20:01 UTC)
Expired
Jun 21, 2001, 3:45 PM CDT
In force
44 min
Issued by
NWS Brownsville, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Kenedy County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 8.0 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, Corpus Christi, TX at 12:00Z on 2001-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2238 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 2001-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -62 square meters per square second.1939Sfc1 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
2238 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
866 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-62 m²/s²
0-3 km storm-relative helicity
-21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KBRO 212001
SVRBRO
TXC261-212045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
301 PM CDT THU JUN 21 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 345 PM CDT

* AT 256 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 23 MILES EAST OF FALFURRIAS...MOVING NORTHEAST
  AT 20 MPH. THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE DIME SIZE
  HAIL... AND WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF...
  NORTHERN KENEDY COUNTY.

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM WINDOWS. REMEMBER...SEVERE THUNDERSTORMS PRODUCE LARGE
DAMAGING HAIL...DAMAGING WINDS...FREQUENT CLOUD TO GROUND
LIGHTNING...AND VERY HEAVY RAIN.

LAT...LON 2704 9790 2702 9779 2727 9772 2726 9794J

DIXON

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Brownsville, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 21, 9:30 AM CDT, 5 hours 31 minutes earlier.

Area forecast discussion, Jun 21, 9:30 AM CDT, 5 hours 31 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
930 AM CDT THU JUN 21 2001

.FORECAST DISCUSSION...
WILL NOT MAKE ANY DRASTIC CHANGES TO CURRENT FORECAST PACKAGE.  THIS
MORNINGS SOUNDING MEASURED PWAT AT 1.83 IN AND CAPE 4648 J/KG...
MOISTURE IS ON THE INCREASE BELOW 500 MB...NOT JUST IN THE PBL...AS
NORTHERN EXTENT OF A TROPICAL AIR MASS ASSOCIATED WITH A WEAK
TROPICAL WAVE BRUSHES THE RIOPLEX AS IT MOVES INTO NE MEXICO.  88D
AND VIS SAT IMAGERY VERIFIES THE PRESENCE OF SCATTERED SHOWERS AND
ISOLATED TSRA.  PERSONAL VISUAL OBSERVATION DETECTED THE PRESENCE OF
ISOLATED TOWERING CU AROUND THE SKYDOME.  LITTLE OR NO CONVECTIVE
INHIBITION EXISTS...SO I EXPECT PULSE TYPE CONVECTION TO INITIATE
ALONG THE SEABREEZE IN WESTERN KENEDY...WILLACY...AND CAMERON
COUNTIES AFTER 1 PM TODAY.  FOR THE REMAINDER OF THE REGION EXPECT
MOSTLY CLOUDY SKIES.

AGREE WITH THE PREVIOUS ASSESSMENT THAT THE FRONTAL ZONE NOW MOVING
OUT OF OK INTO NORTHERN TX WILL REACH THE COASTAL BEND REGION BY
LATE TOMORROW AND STALL...BRINGING INCREASED CHANCE OF SHOWERS TO
THAT AREA.  ON FRIDAY...WILL HAVE TO MONITOR FOR THUNDERSTORM
OUTFLOW BOUNDARIES FROM THE CONVECTIVE ACTIVITY EXPECTED IN THE
COASTAL BEND.  THESE OUTFLOWS IF STRONG ENOUGH COULD INITIATE
CONVECTION IN OUR CWA.

MRF/AVN PROGS THE FRINGES ANOTHER TROPICAL AIRMASS/TROPICAL WAVE TO
AFFECT OUR REGION BY LATE MON INTO EARLY TUESDAY.  THE CORE OF THIS
AIRMASS IS FORECAST TO AFFECT THE SAME REGION AFFECTED BY TS
ALLISON.

.MARINE DISCUSSION...
CURRENT BUOY 020 OBS INDICATE THAT WINDS ARE SOUTHEAST 10 TO 15 KT
WITH SEAS AT 3 FT.  88D AND SATELLITE IMAGERY SHOW ISOLATED
SHOWERS.  LITTLE OR NO CHANGE ARE EXPECTED TO THESE CONDITIONS
THROUGH THE WEEKEND.

BENNETT...53

INTERNET ADDRESS...WWW.SRH.NOAA.GOV/BRO

.BRO...NONE.

Nearby

Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001

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.