Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 21, NWS Austin/San Antonio, TX

July 15, 1990Atascosa County, Bexar County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 15, 1990, 9:20 PM CDT for Atascosa County, Bexar County, Texas. It was in force for 115 min.

The area

The counties it named.

The facts

Issued
Jul 15, 1990, 9:20 PM CDT (02:20 UTC)
Expired
Jul 15, 1990, 11:15 PM CDT
In force
115 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Atascosa County, TX, Bexar County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 2.3 hours before the alert went out and 198 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 00:00Z on 1990-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1774 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 00:00Z on 1990-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 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
1774 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
784 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
266 m²/s²
Significant tornado parameter
2.5
Supercell composite
15.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 160222
FFWSAT
TXC013-029-160415-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
920 PM CDT SUN JUL 15 1990
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1115 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...ATASCOSA...BEXAR
 
HEAVY RAINS ARE CONTINUING TO FALL ACROSS MUCH OF BEXAR COUNTY AND
PORTIONS OF ATASCOSA COUNTY. SEVERAL REPORTS OF FLOODED ROADS AND SOME
ROAD CLOSURES HAVE BEEN RECEIVED. ADDITIONAL RAINFALL OF AN INCH OR SO
IS POSSIBLE.
 
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.
 
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
Jul 15, 8:15 PM CDTSevere Thunderstorm WarningEWXLa Salle45 min
Jul 15, 9:35 PM CDTSevere Thunderstorm WarningEWXWebb55 min
Jul 15, 10:30 PM CDTSevere Thunderstorm WarningEWXWebb60 min
Jul 15, 11:59 PM CDTSevere Thunderstorm WarningEWXDimmit61 min
Jul 16, 2:03 AM CDTFlash Flood WarningEWXAtascosa, Bexar, Medina, Uvalde3 hr
Jul 16, 4:50 AM CDTFlash Flood WarningEWXAtascosa, Bexar, Medina4 hr
Jul 16, 8:42 AM CDTFlash Flood WarningEWXDimmit3 hr
Jul 16, 9:09 AM CDTFlash Flood WarningEWXAtascosa, Bexar3 hr
Jul 16, 11:30 AM CDTFlash Flood WarningEWXZavala3 hr
Jul 16, 11:44 AM CDTFlash Flood WarningEWXDimmit3 hr
Jul 16, 12:12 PM CDTFlash Flood WarningEWXAtascosa4 hr
Jul 16, 4:17 PM CDTFlash Flood WarningEWXAtascosa, Bexar, Wilson3 hr

Nearby

Flash Flood Warnings in Texas, 1990Every flash flood warning in 1990

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.