Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 33, NWS Brownsville, TX

August 15, 2000Starr County, Zapata County, Texas

NWS Brownsville, TX issued this severe thunderstorm warning at Aug 15, 2000, 5:48 PM CDT for Starr County, Zapata County, Texas. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 15, 2000, 5:48 PM CDT (22:48 UTC)
Expired
Aug 15, 2000, 6:30 PM CDT
In force
42 min
Issued by
NWS Brownsville, TX
Area
Whole counties

Counties Starr County, TX, Zapata County, TX

The radar

The Brownsville radar (KBRO), 181 km from the middle of the area, began a volume at 22:50 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, 10.8 hours before the alert went out and 183 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 2000-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 85 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 2000-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 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
85 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
779 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
-14 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.6

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KBRO 152250
SVRBRO
TXC427-505-152330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
548 PM CDT TUE AUG 15 2000

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN ZAPATA COUNTY IN DEEP SOUTH TEXAS
  SOUTHWESTERN STARR COUNTY IN DEEP SOUTH TEXAS

* UNTIL 630 PM CDT

* AT 543 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES SOUTHEAST OF ROMA...MOVING NORTHWEST AT
  35 MPH. THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE DIME SIZE
  HAIL... AND WINDS IN EXCESS OF 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   ROMA BY 555 PM CDT.
   FALCON DAM BY 615 PM CDT.

$$

PHILO
LAT...LON 2624 9894 2632 9885 2677 9928 2659 9932

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 Aug 15, 2:30 PM CDT, 3 hours 18 minutes earlier.

Area forecast discussion, Aug 15, 2:30 PM CDT, 3 hours 18 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
230 PM CDT TUE AUG 15 2000

THE BROWNSVILLE DOPPLER RADAR INDICATED SCATTERED SHOWERS AND
THUNDERSTORMS CONTINUE MOVING NORTHWEST FROM THE GULF INTO DEEP
SOUTH TEXAS THIS AFTERNOON.  THE BRO SOUNDING THIS MORNING SHOWED A
PWAT OF 2.10 AND A K INDEX OF 34.  THIS STILL INDCTS THE AIRMASS IS
MOIST AND UNSTABLE ENOUGH TO STILL PRODUCE SHOWERS OR THUNDERSTORMS
TONIGHT.  ALL MODELS SEEM TO BE IN AGREEMENT IN KEEPING POPS FAIRLY
HIGH TONIGHT AS MOISTURE FROM THE REMAINS OF BERYL CONTINUES TO
LINGER ON. BOTH THE AVN AND THE MRF DRIES THE AIRMASS CONSIDERABLY
BY WEDNESDAY CAUSING POPS TO DECREASE.  TEMPERATURES WILL WARM QUITE
ABIT WITH AMPLE AMOUNT OF SUNSHINE ON WEDNESDAY TO NEAR NORMAL ONCE
AGAIN.  WINDS WILL BE LIGHT OUT OF THE SOUTHEAST WITH HIGH PRESSURE
IN THE GULF. THE AIRMASS WILL CONTINUE TO BE DRY AND STABLE ON
THURSDAY WITH HIGH PRESSURE BUILDING INTO THE AREA.

LONG TERM PROGS...HIGH PRESSURE AT 500 MB OVER NORTH TEXAS AND THE
NORTHERN GULF WILL CAUSE EASTERLY FLOW OF AIR OVER DEEP SOUTH TEXAS
ON FRIDAY AND INCREASE MORE FOR THE WEEKEND.  WILL INCREASE POPS
ONCE AGAIN FOR LATE THIS WEEK AS POTENTIAL FOR MORE EASTERLY WAVES
IS POSSIBLE.

MARINE...DOPPLER RADAR INDICATED SCATTERED TO NUMEROUS SHOWERS OR
THUNDERSTORMS WILL CONTINUE OVER THE GULF TONIGHT AND DECREASE
RAPIDLY ON WEDNESDAY.  BOY002 INDCTD A 16 KNOT WIND FROM THE
SOUTHEAST AND 7 FOOT SEAS WHILE BOY020 REPORTED 12 KNOT WINDS FROM
THE NORTHEAST AND 8 FOOT SEAS.  DUE TO THE HIGH SEAS OVER THE GULF
WATERS WILL KEEP A SMALL CRAFT ADVISORY FOR THAT AREA TONIGHT.  THE
SEAS IN THE BAY HAVE DECREASED AND WILL DROP THE SMALL CRAFT
ADVISORY FOR THE BAY TONIGHT.

55

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

.BRO...SCA IN EFFECT TONIGHT FOR GMZ150-155-170-175.

.BRO 74/91/75/94/76  30/10/00/00H
.MFE 74/93/75/96/76  30/10/00/00
.RGD 74/95/75/98/76  30/10/00/00
.SPI 76/86/78/88/78  30/10/00/00

In the hours before

Special weather statement, Aug 15, 1:54 PM CDT, 3 hours 54 minutes before
TXZ248>255-152100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
154 PM CDT TUE AUG 15 2000

...BAND OF STRONG THUNDERSTORMS APPROACHING DEEP SOUTH TEXAS...

AS AN AREA OF STRONG THUNDERSTORMS MOVES THROUGH DEEP SOUTH TEXAS...
THERE IS A POSSIBILITY OF ISOLATED TORNADOES AND FUNNEL CLOUDS THIS
AFTERNOON.  AT 150 PM...STRONG THUNDERSTORMS...PRODUCING VERY HEAVY
RAINFALL AND DANGEROUS LIGHTNING...WERE MOVING INTO CAMERON AND HIDALGO
COUNTIES AND EXTENDED SOUTHEAST...ACROSS NORTHEASTERN MEXICO...INTO THE
MEXICAN GULF WATERS. THESE STRONG THUNDERSTORMS WERE MOVING NORTHWEST AT
30 MPH.

IF THREATENING WEATHER IS SIGHTED...SEEK SHELTER IMMEDIATELY.  GO INTOz
THE MOST INTERIOR PART OF YOUR HOME OR BUSINESS.  RELAY ANY SEVERE
WEATHER REPORTS TO THE NATIONAL WEATHER SERVICE OFFICE IN BROWNSVILLE.

CAMPBELL/GUERRERO

Nearby

Severe Thunderstorm Warnings in Texas, 2000Every 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; radar from the NEXRAD Level II archive.