Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 27, NWS Brownsville, TX

July 24, 2000Zapata County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Jul 24, 2000, 8:30 PM CDT for Zapata County, Texas. It was in force for 45 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: Jul 24, 2000, 8:30 PM CDT (01:30 UTC)
Expired: Jul 24, 2000, 9:15 PM CDT
In force: 45 min
Issued by: NWS Brownsville, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Zapata County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 1.5 hours before the alert went out and 207 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: 2085 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 1458 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 138 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 250133
SVRBRO
TXC505-250215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
830 PM CDT MON JUL 24 2000

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL ZAPATA COUNTY IN DEEP SOUTH TEXAS

* UNTIL 915 PM CDT

* AT 823 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES NORTHEAST OF ZAPATA...STATIONARY. 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...
  CENTRAL ZAPATA 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.

STAY TUNED TO LOCAL MEDIA OUTLETS...SUCH AS RADIO...TELEVISION...
CABLE TELEVISION...AND NOAA WEATHER RADIO FOR THE LATEST SEVERE
WEATHER INFORMATION.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
BROWNSVILLE.

LAT...LON 2694 9935 2693 9915 2711 9915 2712 9935

BENNETT.53

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 Jul 24, 3:00 PM CDT, 5 hours 30 minutes earlier.

Area forecast discussion, Jul 24, 3:00 PM CDT, 5 hours 30 minutes before

DEEP SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
300 PM CDT MON JUL 24 2000

THE 500 MB HIGH PRESSURE RIDGE HAS CONTINUED TO DOMINATE DEEP SOUTH
TEXAS.  THIS HIGH PRESSURE RIDGE WILL MOVE FARTHER EAST OVER THE
GULF DIMISHING CHANCES FOR RAIN EVEN MORE.  BOUNDARY LAYER RHS CONT
TO BE LESS THAN 50 PERCENT FOR THE NEXT COUPLE OF DAYS CAUSING A
RELATIVELY DRY AND STABLE AIRMASS.  THE BRO SOUNDING THIS MORNING
INDCT A PWAT OF 1.60 AND A K INDEX OF 21.  EXPECT THE SOUNDING TO BE
EVEN DRIER THE NEXT COUPLE OF DAYS AS HIGH PRESSURE BUILDS INTO THE
AREA.  TEMPERATURES WILL BE NEAR TO ABOVE NORMAL FOR THIS TIME OF YEAR
WITH AMPLE AMOUNT OF SUNSHINE.  WINDS WILL INCREASE SLIGHTLY FROM
THE SOUTHEAST TUESDAY AND AGAIN ON WEDNESDAY AS THE PRESSURE
GRADIENT BECOMES A LITTLE TIGHTER.

MARINE...BUOY020 REPORTS THE USUAL PERSISTENT SE WIND NEAR 8 KT WITH
SEAS NEAR 1 FT.  BOY002 SHOWED A 17 KT WIND WITH 2 FEET SEAS.

EXTENDED FORECAST...A LOW PRESSURE AREA WILL MOVE TOWARD SOUTH TEXAS
BY THURSDAY INCREASING THE CHANCES FOR RAIN.  THIS LOW PRESSURE AREA
WILL MOVE WEST AND CAUSE A RELATIVELY DRY AND STABLE AIRMASS BY THE
WEEKEND.

BRO UU 074/096 074/097 075 00/00/00/00
MFE UU 075/100 075/101 076 00/00/00/00
RGC UU 075/106 075/107 076 00/00/00/00
SPI UU 078/088 078/089 079 00/00/00/00

55

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

.BRO...NONE.

Nearby

Severe Thunderstorm Warnings in Texas, 2000 Every severe thunderstorm warning in 2000

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.