Alert archive / Texas / Flash Flood Warnings in 1991

Flash Flood Warning 98, NWS Austin/San Antonio, TX

December 21, 1991Lavaca County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Dec 21, 1991, 3:25 PM CST for Lavaca County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Dec 21, 1991, 3:25 PM CST (21:25 UTC)
Expired
Dec 21, 1991, 5:30 PM CST
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Lavaca County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 9.4 hours before the alert went out and 188 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 1991-12-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 842 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 1991-12-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 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
842 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
597 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
154 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KVCT 212129 RRA
FFWVCT
TXC285-212330-

BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE VICTORIA TX
325 PM CST SAT DEC 21 1991

THE NATIONAL WEATHER SERVICE IN VICTORIA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  100 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTH CENTRAL TEXAS

   ...JACKSON COUNTY

A FLOOD WARNING IS IN EFFECT FOR JACKSON COUNTY. THE JACKSON COUNTY
SHERIFFS OFFICE ADVISES THAT FARM ROAD 1300 AT FM530 NEAR SPEAKS IS
CLOSED DUE TO FLOODING.  ROADWAYS ARE COVERED WITH WATER IN LOW AREAS.

THE VICTORIA WEATHER RADAR INDICATES MODERATE RAIN CONTINUING OVER
JACKSON COUNTY WITH STRONG THUNDERSTOMS NEAR THE JACKSON...LAVACA AND
COLORADO COUNTY LINE.  THE RAIN AND THUNERSTORMS WERE MOVING NORTH-
NORTHEAST NEAR 20 MILES AN HOUR.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.

IF THREATING WEATHER APPROACHES YOU SHOULD GO TO A SAFE PLACE
IMMEDIATELY...YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY
TO RELAY YOUR SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL
WEATH)ER SERVICE OFFICE.

STAY TUNED TO NOAA WEATHER RADIO...TV OR RADIO STATION FOR THE
LATEST STATEMENTS AND/OR WARNINGS.

05

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 20, 7:57 PM CSTFlash Flood WarningEWXHays, Travis, Williamson3 hr
Dec 20, 7:57 PM CSTFlash Flood WarningEWXLampasas, Mills3 hr
Dec 20, 7:57 PM CSTFlash Flood WarningEWXGillespie3 hr
Dec 20, 9:04 PM CSTFlash Flood WarningEWXBandera, Edwards, Kendall, Kerr, Real9 hr
Dec 20, 9:28 PM CSTFlash Flood WarningEWXLee, Milam3 hr
Dec 20, 9:28 PM CSTFlash Flood WarningEWXBastrop3 hr
Dec 20, 10:45 PM CSTFlash Flood WarningEWXHays, Travis2 hr
Dec 20, 11:30 PM CSTFlash Flood WarningEWXUvalde4 hr
Dec 20, 11:47 PM CSTFlash Flood WarningEWXComal6 hr
Dec 21, 1:04 AM CSTFlash Flood WarningEWXBlanco, Hays, Travis3 hr
Dec 21, 1:22 AM CSTFlash Flood WarningEWXBurnet, Llano3 hr
Dec 21, 1:22 AM CSTFlash Flood WarningEWXWilliamson3 hr
Dec 21, 1:22 AM CSTFlash Flood WarningEWXLampasas3 hr
Dec 21, 2:51 AM CSTFlash Flood WarningEWXKinney, Uvalde7 hr
Dec 21, 3:25 AM CSTFlash Flood WarningEWXBastrop, Burleson, Lee, Milam4 hr
Dec 21, 3:25 AM CSTFlash Flood WarningEWXCaldwell4 hr
Dec 21, 3:51 AM CSTFlash Flood WarningEWXBlanco, Burnet, Lampasas, Llano, Travis, Williamson4 hr
Dec 21, 3:51 AM CSTFlash Flood WarningEWXHays4 hr
Dec 21, 8:36 AM CSTFlash Flood WarningEWXLavaca2 hr
Dec 21, 8:40 AM CSTFlash Flood WarningEWXWebb5 hr
Dec 21, 10:55 AM CSTFlash Flood WarningEWXLavaca2 hr
Dec 21, 11:05 AM CSTFlash Flood WarningEWXMilam7 hr

Nearby

Flash Flood Warnings in Texas, 1991Every flash flood warning in 1991

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.