Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 64, NWS San Angelo, TX

September 19, 1990Sutton County, Texas

NWS San Angelo, TX issued this flash flood warning at Sep 19, 1990, 11:47 AM CDT for Sutton County, Texas. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Sep 19, 1990, 11:47 AM CDT (16:47 UTC)
Expired
Sep 19, 1990, 5:45 PM CDT
In force
6 hr
Issued by
NWS San Angelo, TX
Area
Whole counties

County Sutton 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

Del Rio, TX (KDRT), launched 12:00Z, 4.8 hours before the alert went out and 129 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 1990-09-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 36 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 1990-09-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
36 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
833 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
35 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 KSJT 191650
FFWSJT
TXC435-192245-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1147 AM CDT WED SEP 19 1990
 
THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES
 
IN  TEXAS
 
   ...SUTTON COUNTY
 
HIGH WATER CONTINUES TO BE A PROBLEM ACROSS SUTTON COUNTY. THE TEXAS
DEPARTMENT OF PUBLIC HIGHWAYS IN SUTTON COUNTY REPORTS THAT FARM TO
MARKET ROAD 189 IN SOUTHERN SUTTON COUNTY REMAINS CLOSED BY HIGH WATER
ON THE DRY DEVILS RIVER. OTHER ROADS IN THE COUNTY MAY ALSO HAVE AREAS
WHERE FLOOD WATERS COVER THE ROADWAY AND MANY ROADS HAVE HAD DAMAGE TO
THE ROADBED DUE TO THE FLOODING.
 
A SERIES OF UPPER LEVEL DISTURBANCES ALONG WITH ABUNDANT TROPICAL
MOISTURE ACROSS THE CONCHO VALLEY WILL CONTINUE TO KEEP CHANCES FOR
ADDITIONAL HEAVY RAINS QUITE GOOD. PERSONS WITH INTERESTS ALONG THE
SAN SABA...LLANO AND DRY DEVILS RIVERS SHOULD REMAIN ALERT FOR RISING
WATERS. MOTORISTS THROUGHOUT THE SOUTHERN CONCHO VALLEY AREA CAUTIONED
TO KEEP A LOOKOUT FOR FLOOD WATERS ACROSS ROADWAYS.
 
 
MOST DEATHS IN FLASH FLOODING 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.

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 19, 5:45 AM CDTFlash Flood WarningSJTSutton6 hr
Sep 19, 5:39 PM CDTFlash Flood WarningSJTSutton4 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.