Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 29, NWS Austin/San Antonio, TX

July 16, 1990Atascosa County, Bexar County, Wilson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jul 16, 1990, 4:17 PM CDT for Atascosa County, Bexar County, Wilson County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 16, 1990, 4:17 PM CDT (21:17 UTC)
Expired
Jul 16, 1990, 7:15 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Atascosa County, TX, Bexar County, TX, Wilson 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 12:00Z, 9.3 hours before the alert went out and 190 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 12:00Z on 1990-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2457 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 12:00Z on 1990-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
2457 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
650 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 162118
FFWSAT
TXC013-029-493-170015-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
417 PM CDT MON JUL 16 1990
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  715 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...ATASCOSA...BEXAR...WILSON
 
RADAR INDICATES THAT SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN
CONTINUED TO SPREAD ACROSS ATASCOSA COUNTY...WESTERN WILSON COUNTY AND
EASTERN BEXAR COUNTY. LOW-WATER CROSSINGS AND LOW-LYING AREAS ARE
EITHER FLOODED OR ARE BEGINNING TO FLOOD.
 
BANDS OF HEAVY RAINS ARE EXPECTED TO CONTINUE TO MOVE ACROSS
ATASCOSA...WILSON AND BEXAR COUNTIES DURING THE NEXT TWO OR THREE
HOURS. OTHER SHOWERS AND THUNDERSTORMS CONTINUE OVER MOST AREAS OF
SOUTH CENTRAL TEXAS. A FLASH FLOOD WATCH CONTINUES OVER SOUTH CENTRAL
TEXAS...THE TEXAS HILL COUNTRY AND THE RIO GRANDE PLAINS SOUTHWEST OF
SAN ANTONIO.
 
PEOPLE THROUGHOUT THE WATCH AREA ARE URGED TO BE PREPARED TO PROTECT
LIFE AND PROPERTY SHOULD HEAVY RAINS THREATEN OR A WARNING IS ISSUED.
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN
REPORTED.
 
REMEMBER...DEAT3HS DURING FLASH FLOODING ARE FREQUENTLY RELATED TO
MOTORISTS DRIVING INTO FLOODED LOW WATER CROSSINGS OR FROM CHILDREN
PLAYING NEAR FLOODED STREAMS OR DRAINAGE AREAS.

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, 9:20 PM CDTFlash Flood WarningEWXAtascosa, Bexar115 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

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.