Alert archive / Texas / Tornado Warnings in 1996

Tornado Warning 1, NWS Brownsville, TX

December 31, 1996Cameron County, Texas

NWS Brownsville, TX issued this tornado warning at Dec 31, 1996, 11:17 AM CST for Cameron County, Texas. It was in force for 58 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
Dec 31, 1996, 11:17 AM CST (17:17 UTC)
Expired
Dec 31, 1996, 12:15 PM CST
In force
58 min
Issued by
NWS Brownsville, TX
Area
Whole counties

County Cameron County, TX

The radar

The Brownsville radar (KBRO), 27 km from the middle of the area, began a volume at 17:17 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, 5.3 hours before the alert went out and 29 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 1996-12-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1820 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, Brownsville Intl, TX at 12:00Z on 1996-12-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
1820 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
498 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
1.3
Supercell composite
7.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBRO 311720
TORBRO
TXC061-311815-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1117 AM CST TUE DEC 31 1996
 
THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1215 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN SOUTH TEXAS
 
   ...CAMERON COUNTY
 
AT 1100 AM CDT...BROWNSVILLE RADAR INDICATED A SEVERE THUNDERSTORM IN
THE HARLINGEN AREA. THE THUNDERSTORM WAS MOVING NORTH AT 10 TO 15 MPH.
FUNNEL CLOUDS WERE REPORTED IN THE HARLINGEN AREA WITH THIS
THUNDERSTORM.
 
THUNDERSTORMS ARE DEVELOPING QUICKLY OVER DEEP SOUTH TEXAS TODAY.
CONTINUE TO MONITOR WEATHER CONDITIONS TODAY VIA NOAA WEATHER
RADIO...OR COMMERCIAL RADIO AND TELEVISION.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.J  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

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 Dec 31, 9:17 AM CST, 2 hours earlier.

Area forecast discussion, Dec 31, 9:17 AM CST, 2 hours before
DEEP SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
915 AM CST TUE DEC 31 1996

WL HAVE TO INSERT 20% POPS IN FCST FOR THIS AFTN WITH SOME RWS NOW
OVR C VLY.  MOST ACTIVITY N OF ARE8A...AND IT SHLD STAY PRIMARILY N
OF AREA WHERE BETTER LIFT IS.  OTHERWISE VERY WARM AND STICKY AIR
WILL CONT ACRSS FA THRU WED.  REST OF CURRENT FCST OK.

54

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 31, 12:16 PM CSTSevere Thunderstorm WarningBROKenedy59 min

Nearby

Tornado Warnings in Texas, 1996Every tornado warning in 1996Tornadoes in 1996

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.