Alert archive / Texas / Flash Flood Warnings in 1991

Flash Flood Warning 36, NWS Austin/San Antonio, TX

September 16, 1991Real County, Uvalde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 16, 1991, 1:52 AM CDT for Real County, Uvalde County, Texas. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Sep 16, 1991, 1:52 AM CDT (06:52 UTC)
Expired
Sep 16, 1991, 6:00 AM CDT
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Real County, TX, Uvalde County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 6.9 hours before the alert went out and 104 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 1991-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1419 joules per kilogram.LCLEL10008507005003002001001 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 1991-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
1419 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1435 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 160657
FFWSAT
TXC385-463-161100-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
152 AM CDT MON SEP 16 1991
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  600 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...REAL...UVALDE
 
RADAR ESTIMATES OF RAINFALL OVER REAL COUNTY AND NORTHERN UVALDE
COUNTY DURING THE PAST TWO HOURS SHOW THE RAINFALL MAY HAVE REACHED
OVER 4 INCHES OVER THE TRIBUTARIES OF THE FRIO AND NUECES RIVERS.
TWO AND ONE-HALF INCHES OF RAIN HAS FALLEN NORTH OF LEAKEY IN A LITTLE
OVER 30 MINUTES.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN
REPORTED.
 
REMEMBER...DEATHS DURING FLASH FLOODING ARE FREQUENTLY RELATED TO
MOTORISTS DRIVING INTO FLOODED LOW WATER CROSSINGS OR FROM CHILDREN
PLAYING NEAR FLOODED STREAMS OR DRAINAGE AREAS.
 
YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR
SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.
 
PLEASE LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO STATION
FOR LATER STATEMENTS OR WARNINGS REGARDING THIS SEVERE WEATHER EVENT.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 15, 11:31 PM CDTFlash Flood WarningEWXEdwards6 hr
Sep 16, 4:04 AM CDTFlash Flood WarningEWXKerr4 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.