Alert archive / Texas / Tornado Warnings in 1999

Tornado Warning 8, NWS Brownsville, TX

August 23, 1999Kenedy County, Texas

NWS Brownsville, TX issued this tornado warning at Aug 23, 1999, 3:34 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 counties it named.

The facts

Issued
Aug 23, 1999, 3:34 PM CDT (20:34 UTC)
Expired
Aug 23, 1999, 4:15 PM CDT
In force
41 min
Issued by
NWS Brownsville, TX
Area
Whole counties

County Kenedy County, TX

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 23, 2:00 AM CDTTornado WatchSPC14 hr

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 12:00Z, 8.6 hours before the alert went out and 117 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 1999-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1033 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brownsville Intl, TX at 12:00Z on 1999-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 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
1033 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1044 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
144 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.

881 
WFUS1 KBRO 232037 RRA
TORBRO
TXC261-232115-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
334 PM CDT MON AUG 23 1999

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN KENEDY COUNTY IN TEXAS

* UNTIL 415 PM CDT

* AT 333 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH A POSSIBLE TORNADO OVER EXTREME SOUTH CENTRAL
  KENEDY COUNTY...OR ABOUT 13 MILES NORTH OF RAYMONDVILLE...MOVING   
  NORTHEAST AT 20 MPH.  YTURRIA RANCH IS IN THE PATH OF THIS STORM.

GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO 
BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE 
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE 
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM 
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Aug 23, 2:45 PM CDT, 49 minutes earlier.

Area forecast discussion, Aug 23, 2:45 PM CDT, 49 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
245 PM CDT MON AUG 23 1999

THE REMNANTS OF BRET IS MOVING NORTH OF LAREDO CAUSING SOME SHOWERS
AND THUNDERSTORMS NEAR THE WATERSHED.  JUST A FEW ISOLATED SHOWERS
DOTTED DEEP SOUTH TEXAS TODAY...THEREFORE WILL END THE FLASH FLOOD
WATCH LATER THIS AFTERNOON.  THE REMNANTS OF BRET IS PROGGED TO CONT
TO MOVE WEST-NORTHWEST AND DISSIPATE WITHIN THE NEXT 48 HOURS.  WILL
DECREASE POPS RAPIDLY IN THE NEXT FEW DAYS AS BOUNDARY LAYER RHS ARE
BELOW 50 PERCENT WITHIN THE NEXT 36 HOURS.  TEMPERATURES WILL
INCREASE AS CLOUD COVER WILL DECREASE AND WILL MAKE ADJUSTMENTS
ACCORDINGLY.  WINDS WILL BE FAIRLY LIGHT FROM THE SOUTHEAST FOR THE
NEXT FEW DAYS AS THE INFLUENCE OF BRET WILL NOT BE EFFECTING THE
AREA.  ALL MODELS SEEM TO BE IN AGREEMENT IN DECREASING MOISTURE
VERY RAPIDLY IN THE NEXT FEW DAYS.

CWF...BOY020 IS FROM THE EAST AT 6 KNOTS WITH SEAS GOING DOWN TO 4
FEET.  THIS SHOULD CONT FOR THE NEXT FEW DAYS CAUSING WINDS TO BE
BELOW SMALL CRAFT ADVISORY.

LONG TERM PROGS...THE AIRMASS CONT TO BE DRY AND STABLE FOR THE
EXTENDED PERIOD...ALTHOUGH A TROUGH OF LOW PRESSURE SETTLES OVER THE
WESTERN GULF.  DO NOT EXPECT ANY SHOWER ACTIVITY FOR THE NEXT FEW
DAYS AS HIGH PRESSURE RIDGES IN FROM NEW MEXICO.

55

.BRO...NONE.

.BRO  077/092/077/094/077  10/00/00/00
.MFE  075/094/076/098/076  10/00/00/00
.RGD  075/098/075/105/075  10/00/00/00
.SPI  078/088/080/090/080  10/00/00/00

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 7:20 PM CDTFlash Flood WarningBROKenedy, Willacy3 hr
Aug 22, 10:15 PM CDTFlash Flood WarningBROBrooks, Kenedy6 hr
Aug 23, 4:18 AM CDTFlash Flood WarningBROBrooks, Kenedy8 hr
Aug 23, 4:18 AM CDTFlash Flood WarningBROWillacy8 hr
Aug 23, 11:59 AM CDTFlash Flood WarningBROCameron4 hr
Aug 23, 2:59 PM CDTTornado WarningBROKenedy, Willacy31 min
Aug 23, 3:18 PM CDTTornado WarningBROCameron, Hidalgo27 min
Aug 23, 3:44 PM CDTTornado WarningBROCameron, Hidalgo, Willacy61 min
Aug 23, 4:27 PM CDTTornado WarningBROWillacy63 min
Aug 23, 6:55 PM CDTFlash Flood WarningBROHidalgo3 hr

Nearby

Tornado Warnings in Texas, 1999Every tornado warning in 1999Tornadoes in 1999

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.