Alert archive / Texas / Flash Flood Warnings in 1992

Flash Flood Warning 82, NWS Austin/San Antonio, TX

July 18, 1992Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 18, 1992, 11:50 AM CDT for Val Verde County, Texas. It was in force for 20 min.

The area

The counties it named.

The facts

Issued
Jul 18, 1992, 11:50 AM CDT (16:50 UTC)
Expired
Jul 18, 1992, 12:10 PM CDT
In force
20 min
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 12:00Z, 4.8 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 12:00Z on 1992-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1399 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 12:00Z on 1992-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
1399 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
797 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
58 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 181647
FFWDRT
TXC465-182050-

BULLETIN - EBS ACTIVITATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DEL RIO TX
1150 AM CDT SAT JUL 18 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 350 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY IN

SOUTHCENTRAL TEXAS...VAL VERDE.




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.

RANCHERS IN NORTHERN VAL VERDE COUNTY HAVE REPORTED 3 TO 5 INCHES OF
RAIN S|INCE THIS MORNING. WATER IS FAST APPOACHING THE BRIDGE ON THE
DEVILS RIVER AT BAKERS CROSSING.

STAY TUNED TO NOAA WEATHER 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, 11:29 AM CDT, 21 minutes before
TXZ054-181730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
1130 AM CDT SAT JUL 18 1992

AT 1125 AM CDT RADAR INDICATED THUNDERSTORMS FROM SONORA TO JUNO TO
COMSTOCK THE STRONGEST STORMS WERE LOCATED 10 MILES NORTHWEST OF
COMSTOCK. THESE STORMS WERE MOVING TO THE SOUTHEAST AT 5 MPH.

SMALL HAIL...HEAVY RAIN...STRONG GUSTY WINDS AND FREQUENT DANGEROUS
LIGHTNING ARE POSSIBLE WITH THESE STORMS.

THE PORTION OF HIGHWAY 1024 IN NORTHERN VAL VERDE COUNTY IS SUBJECT TO
CLOSER DUE TO THE LARGE AMOUNTS OF RAIN RECEIVED AT THIS POINT. HIGHWAY
163 NORTH OUT OF COMSTOCK HAS ALSO RECEIVED LARGE AMOUNTS OF RAIN.
MILLER RANCH JUST NORTH OF VAL VERDE COUNTY REPORTED 3.40 INCHES...ACTON
RANCH ALSO JUST NORTH OF THE VAL VERDE COUNTY LINE REPORTED 4.50 INCHES
SINCE LAST NIGHT. DRAWS IN THE NORTERN PORTION OF VAL VERDE COUNTY HAVE
BEEN REPORTED TO HAVE STARTED RUNNING AT THIS TIME...BE PREPARED FOR
LOW WATER CROSSINGS TO START RUNNING.

THESE STORMS WILL LIKELY MOVE INTO THE DEL RIO AND LAKE AMISTAD AREAS.
BOATERS AND FISHERMEN ON LAKE AMISTAD AND SURROUNDING RIVERS SHOULD
KEEP A WATCHFUL EYE ON THE WEATHER AND BE PREPARED TO MOVE TO A PLACE
OF SAFETY IF THE WEATHER BEGINS TO D6ETERIORATE.

STAY TUNED TO YOUR LOCAL RADIO...TV...OR NOAA WEATHER RADIO FOR DETAILS
AS THEY DEVELOP.

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.