Alert archive / Texas / Flash Flood Warnings in 1992

Flash Flood Warning 83, NWS Austin/San Antonio, TX

July 19, 1992Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 19, 1992, 4:00 AM CDT for Val Verde County, Texas. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Jul 19, 1992, 4:00 AM CDT (09:00 UTC)
Expired
Jul 19, 1992, 10:00 AM CDT
In force
6 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Val Verde County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 9.0 hours before the alert went out and 66 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 1992-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 503 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 1992-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 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
503 J/kg
Mixed-layer CIN
-101 J/kg
Mixed-layer LCL
1232 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
-15 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.

000 
TTAA00 KDRT 190904
FFWDRT
TXC465-191500-

BULLETIN - EBS ACTIVITATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DEL RIO TX
400 AM CDT SUN JUL 19 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 1000 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY IN

SOUTHCENTRAL TEXAS...VAL VERDE.

AT 400 AM CDT AN AREA OF SHOWERS AND THUNDERSTORMS COVERED VAL VERDE
COUNTY EXTENDING TO 50 MILES SOUTH OF DEL RIO AND EAST TO THE CAMP WOOD
AREA. THUNDERSTORMS WITH RAINFALL RATES OF 2 TO 4 INCHES AN HOUR WERE
LOCATED JUST EAST OF COMSTOCK AND 15 MILES SOUTHWEST OF DEL RIO. IN THE
LAST THREE HOURS THE DEL RIO NATIONAL WEATHER SERVICE HAS RECEIVED .70
INCH OF RAIN.

BECAUSE THE THUNDERSTORMS WERE MOVING SLOWLY TO THE NORTH AT 5 MPH AND
YESTERDAY'S RAINS OF 3 TO 5 INCHES IN NORTHERN VAL VERDE COUNTY FLASH
FLOODING IS AGAIN LIKELY ACROSS THE NORTHERN AND EASTERN HALF OF THE
COUNTY.  HIGHWAY 163 THAT RUNS NORTH OUT OF COMSTOCK THROUGH CENTRAL VAL
VERDE COUNTY REMAINS CLOSED TO TRAFFIC BECAUSE OF HIGH WATER IN NORTHERN
SECTIONS OF THE COUNTY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
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 MOVE UP TO HIGHER GROUND.

STAY TUNED TO NOAA WEATHER RADIO...LOCAL TV AND RADIO FOR FURTHER
DETAILS AS THEY DEVELOP.

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

Special weather statement, Jul 18, 10:18 PM CDT, 5 hours 42 minutes before
TXZ030-034>037-190500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1010 PM CDT SAT JUL 18 1992

...THUNDERSTORMS MOVING OVER THE CITY OF AUSTIN...

AT 1005 PM...SHOWERS AND THUNDERSTORMS WERE SHOWN IN A BAND 30 TO 50
MILES WIDE FROM SOUTHWEST OF SAN ANTONIO TO AUSTIN TO NEAR WACO AND
BETWEEN AUSTIN...LAGRANGE AND COLLEGE STATION WITH MOVEMENT TOWARDS
THE NORTHEAST AT 15 MPH. THE THUNDERSTORMS HAVE BEGUN TO SLOWLY DIMINISH
IN INTENSITY...BUT STRONG THUNDERSTORMS WERE LOCATED SOUTH AND EAST OF
JOHNSON CITY. THUNDERSTORMS WILL LIKELY CONTAIN BRIEF LOCALLY HEAVY
RAINS...DANGEROUS LIGHTNING AND GUSTY WINDS.

WE DID RECEIVE ONE REPORT OF 4.75 INCHES OF RAINFALL THAT OCCURRED
6 *MILES WEST OF THE CITY OF LEANDER...WHICH IS LOCATED 20 MILES
NORTHWEST OF AUSTIN.
PJL
Special weather statement, Jul 18, 10:53 PM CDT, 5 hours 7 minutes before
TXZ034-035-038-039-190600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1055 PM CDT SAT JUL 18 1992

AT 1050 PM CDT...HONDO RADAR INDICATED A THUNDERSTORM MOVING INTO
BEXAR COUNTY AND THE CITY OF SAN ANTONIO FROM THE WEST.

THIS STORM LIKELY CONTAINS LOCALLY HEAVY RAIN...FREQUENT LIGHTNING AND
GUSTY SURFACE WINDS.  RESIDENTS IN BEXAR COUNTY AND THE CITY OF SAN
ANTONIO...AS WELL AS THOSE COUNTIES ADJACENT TO BEXAR COUNTY...SHOULD
BE ON THE ALERT FOR THREATENING WEATHER AND ACT ACCORDINGLY.

OTHER THUNDERSTORMS ARE NOTED IN KENDALL...BANDERA...MEDINA AND COMAL
COUNTIES.  MOVEMENT IS TOWARD THE NORTH AT 15 MPH.

ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.
Special weather statement, Jul 18, 11:37 PM CDT, 4 hours 23 minutes before
TXZ036-037-190530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1130 PM CDT SAT JUL 18 1992

...SLOW MOVING THUNDERSTORMS OVER THE CAPITAL AREA...

AT 1125 PM...RADAR SHOWED A BROAD AREA OF RAIN WITH SCATTERED EMBEDDED
THUNDERSTORMS...EXTENDING FROM GEORGETOWN ACROSS AUSTIN TO NEAR DRIPPING
SPRINGS AND BLANCO.  SATELLITE ESTIMATED RAINFALL TOTALS BETWEEN 2.4"
AND 3.3" OVER PARTS OF BLANCO AND GILLESPIE COUNTIES DURING THE PREVIOUS
4 HOURS.  SHOWERS AND THUNDERSTORMS WERE SLOWLY DISSIPATING OVER
WILLIAMSON...TRAVIS...BLANCO AND HAYS COUNTIES...WITH A FEW ISOLATED
RAINFALL RATES AROUND 1/2 INCH PER HOUR.

DUE TO THE SLOW MOVEMENT OF THE RAIN AND THUNDERSTORMS...SOME LOCALIZED
FLOODING OF STREETS...ROADS...DRAINAGE DITCHES AND LOW WATER CROSSINGS.
JVD
Special weather statement, Jul 19, 12:46 AM CDT, 3 hours 14 minutes before
TXZ034-036-037-190645-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1245 AM CDT SUN JUL 19 1992

...MODERATE RAINS CONTINUE OVER THE HILL COUNTRY WEST OF AUSTIN...

AT 1240 AM...RADAR SHOWED LIGHT TO MODERATE RAINS OVER MUCH OF SOUTH
CENTRAL TEXAS...BETWEEN WACO...AUSTIN AND SAN ANTONIO.  A FEW THUNDER-
STORMS WERE OVER EASTERN WILLIAMSON COUNTY...NEAR HUTTO/THRALL AND
THORNDALE.  ANOTHER EMBEDDED THUNDERSTORM WAS OVER THE CITY OF BLANCO.
THEY WERE SHOWING LITTLE OR NO MOVEMENT.

SOME SPOTS OUT IN THE HILL COUNTRY MAY HAVE RECEIVED AS MUCH AS 2 TO
4 INCHES OF RAIN.  SO FAR THE HIGHEST AMOUNT REPORTED WAS 4.75 INCHES
6 MILES WEST OF LEANDER.

BOTH AREAL COVERAGE AND INTENSITIES CONTINUE TO SLOWLY DIMINISH.
JVD
Special weather statement, Jul 19, 1:04 AM CDT, 2 hours 56 minutes before
TXZ034-035-038-039-190700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
100 aM CDT Sun JUL 19 1992

AT 100 AM CDT...HONDO WEATHER RADAR INDICATED A LARGE AREA OF RAIN
SHOWERS AND A FEW THUNDERSTORM OVER SOUTH CENTRAL TEXAS AND PARTS OF THE
HILL COUNTRY.  THE AREA EXTENDS FROM MAVERICK COUNTY THROUGH MEDINA AND
BEXAR COUNTY TO WEST OF THE CITY OF AUSTIN.  THE STORMS WERE MOVING TO
THE NORTH AT 15 TO 20 MPH.

AS THESE STORMS PASS YOU CAN EXPECT BRIEF HEAVY RAINS AND FREQUENT
LIGHTNING AND GUSTY WINDS.  PERSONS IN SOUTH CENTRAL TEXAS AND THE HILL
COUNTRY SHOULD BE ON THE ALERT FOR THREATENING WEATHER AND READY TO TAKE
ACTION IF A WARNING IS ISSUED.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 8:48 PM CDTSevere Thunderstorm WarningEWXTravis, Williamson57 min
Jul 19, 10:10 AM CDTFlash Flood WarningEWXVal Verde6 hr
Jul 19, 4:10 PM CDTFlash Flood WarningEWXCalhoun3 hr

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.