Alert archive / Texas / Flash Flood Warnings in 1992

Flash Flood Warning 30, NWS Austin/San Antonio, TX

March 4, 1992Medina County, Uvalde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Mar 4, 1992, 2:17 AM CST for Medina County, Uvalde County, Texas. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Mar 4, 1992, 2:17 AM CST (08:17 UTC)
Expired
Mar 4, 1992, 8:15 AM CST
In force
6 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Medina County, TX, Uvalde County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 8.3 hours before the alert went out and 136 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, Del Rio, TX at 00:00Z on 1992-03-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1920 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, Del Rio, TX at 00:00Z on 1992-03-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.1939Sfc1 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
1920 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1020 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
212 m²/s²
Significant tornado parameter
0.9
Supercell composite
3.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 040822
FFWSAT
TXC325-463-041415-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
217 AM CST WED MAR 4 1992
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 815 AM CST FOR PEOPLE
IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
 
   ...MEDINA COUNTY...UVALDE COUNTY...INCLUDING THE FRIO RIVER...
      SABINAL RIVER AND HONDO CREEK...
 
ANOTHER AREA OF THUNDERSTORMS IS MOVING EAST AT 35 MPH ACROSS UVALDE
AND REAL COUNTIES TOWARD BANDERA AND MEDINA COUNTIES.  THIS AREA
CONTAINS POSSIBLE HAIL AND FREQUENT LIGHTNING AS WELL AS GUSTY WINDS
AND LOCALLY HEAVY RAIN WHICH MAY CAUSE RAPID FLOODING.  SINCE THE
GROUND IS ALREADY SATURATED FROM PREVIOUS RAINFALL...THE NEW RAINS
WILL NOT SOAK IN BUT RUN OFF RAPIDLY INTO ALREADY SWOLLEN OR FLOODED
CREEKS AND RIVERS.  THE FRIO AND SABINAL RIVERS...AS WELL AS HONDO
CREEK...WILL BE MOST AFFECTED THIS MORNING.
 
A FLASH FLOOD WARNING CONTINUES IN EFFECT UNTIL 645 AM FOR BANDERA...
COMAL...KENDALL...KERR AND REAL COUNTIES...INCLUDING THE GUADALUPE...
MEDINA AND FRIO RIVERS.
 
A FLASH FLOOD AND FLOOD WATCH REMAINS IN EFFECT FOR MOST OF SOUTH
TEXAS.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS OBSERVED
ACT QUICKLY.  MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS.  DO
DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
AVOID ALREADY FLOODED AREAS.  TRAVELERS SHOULD NOT ATTEMPT TO
CROSS FLOODED ROADS.  IF YOUR VEHICLE STALLS...LEAVE IT AND MOVE
IMMEDIATELY TO HIGHER GROUND.
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.
TO ESCAPE RISING WATER DURING THREATENING RAINS.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT.  IT IS
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS.  CAMPERS AND OTHER
PEOPLE IN RECREATION AREAS ALONG CREEKS...STREAM...AND RIVERS IN
THE WARNING AREA SHOULD MOVE TO HIGH GROUND IMMEDIATELY.
 
FLOOD PRONE URBAN AREAS FILL WITH WATER QUICKLY.  CLOGGED STORM
DRAINS MAY CAUSE OTHER AREAS TO FLOOD.  DO NOT DRIVE THROUGH
FLOOD WATERS AND STAY AWAY FROM STORM DRAINS.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Mar 3, 11:48 PM CST, 2 hours 29 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN TX
1145 PM CST TUE MAR 03 1992

         STORM SYSTEM TUESDAY...3/03/1992...

TIME   COUNTY      EVENT
2110   MILLS       MARBLE TO 3/4 INCH HAIL NEAR GOLDTHWAITE AS REPORTED
                   BY THE MILLS COUNTY SHERIFF OFFICE.
2230   FAYETTE     WIND GUST TO 60 MPH NEAR CISTERN AS REPORTED BY TV-24
                   WEATHER WATCHER.
2240   BASTROP     SMITHVILLE POLICE REPORTED 3/4 INCH TO A FEW GOLFBALL
                   SIZE HAILSTONES IN THE CITY OF SMITHVILLE WITH 40 TO
                   50 MPH WINDS.

LUNA
.END

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 3, 6:00 PM CSTSevere Thunderstorm WarningEWXKinney60 min
Mar 3, 6:05 PM CSTSevere Thunderstorm WarningEWXVal Verde55 min
Mar 3, 6:46 PM CSTSevere Thunderstorm WarningEWXReal59 min
Mar 3, 6:54 PM CSTSevere Thunderstorm WarningEWXBandera, Kerr2 hr
Mar 3, 7:05 PM CSTSevere Thunderstorm WarningEWXKinney, Uvalde55 min
Mar 3, 7:30 PM CSTSevere Thunderstorm WarningEWXVal Verde55 min
Mar 3, 8:04 PM CSTSevere Thunderstorm WarningEWXUvalde41 min
Mar 3, 8:18 PM CSTSevere Thunderstorm WarningEWXZavala57 min
Mar 3, 8:34 PM CSTSevere Thunderstorm WarningEWXWebb56 min
Mar 3, 9:02 PM CSTSevere Thunderstorm WarningEWXFrio58 min
Mar 3, 9:45 PM CSTFlash Flood WarningEWXBexar4 hr
Mar 3, 10:05 PM CSTSevere Thunderstorm WarningEWXVal Verde55 min
Mar 3, 10:10 PM CSTSevere Thunderstorm WarningEWXBexar65 min
Mar 3, 10:15 PM CSTSevere Thunderstorm WarningEWXBastrop35 min
Mar 3, 10:32 PM CSTSevere Thunderstorm WarningEWXFayette, Lee43 min
Mar 3, 10:47 PM CSTSevere Thunderstorm WarningEWXWilson58 min
Mar 4, 12:40 AM CSTFlash Flood WarningEWXBandera, Comal, Kendall, Kerr6 hr
Mar 4, 12:40 AM CSTFlash Flood WarningEWXReal6 hr
Mar 4, 3:04 AM CSTFlash Flood WarningEWXBlanco, Hays3 hr
Mar 4, 3:55 AM CSTSevere Thunderstorm WarningEWXComal50 min
Mar 4, 5:26 AM CSTFlash Flood WarningEWXBastrop, Travis, Williamson4 hr
Mar 4, 5:26 AM CSTFlash Flood WarningEWXBlanco, Caldwell, Hays4 hr
Mar 4, 4:17 PM CSTSevere Thunderstorm WarningEWXBurnet58 min
Mar 4, 4:58 PM CSTSevere Thunderstorm WarningEWXTravis, Williamson62 min
Mar 4, 5:15 PM CSTSevere Thunderstorm WarningEWXBlanco, Hays60 min

Nearby

Flash Flood Warnings in Texas, 1992Every flash flood warning in 1992

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.