Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 45, NWS San Angelo, TX

August 6, 1990Sutton County, Texas

NWS San Angelo, TX issued this flash flood warning at Aug 6, 1990, 4:12 PM CDT for Sutton County, Texas. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Aug 6, 1990, 4:12 PM CDT (21:12 UTC)
Expired
Aug 6, 1990, 10:15 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, 9.2 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 1990-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 320 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 1990-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 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
320 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1063 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
102 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 062141
FFWSJT
TXC327-435-070315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
412 PM CDT MON AUG 6 1990
 
THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 1015 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES
 
IN  TEXAS
 
   ...MENARD COUNTY...SUTTON COUNTY
 
AT 430 PM CDT SAN ANGELO RADAR SHOWED NO RAIN FALLING IN EITHER SUTTON
OR MENARD COUNTY, HOWEVER DUE TO THE HEAVY RAINS OF THE PAST SEVERAL
DAYS SOME ROADS REMAIN CLOSED BY HIGH WATER. THESE ROADS INCLUDE FM
864 IN BOTH SUTTON AND MENARD COUNTIES NEAR FT MCKAVETT, ALSO FM 2092
AND FM 1311 IN MENARD COUNTY. THE SAN SABA RIVER IN MENARD COUNTY IS
STILL VERY HIGH BUT WITHIN ITS BANKS AT MENARD. IN SUTTON COUNTY
HIGHWAY 189 TO JUNO IS CLOSED. OTHER ROADS THAT WERE CLOSED EARLIER
ARE NOW REPORTED OPEN BUT SOME HAVE SUSTAINED DAMAGE FROM THE FLOOD
WATERS. ANYONE PLANNING TRAVEL IN SUTTON, SCHLEICHER OR MENARD
COUNTIES SHOULD REMAIN ALERT FOR WATER ACROSS ROADWAYS AND DAMAGED
ROADS AT LOW WATER CROSSINGS. NEVER IGNORE WARNING SIGNS OR
BARRICADES.
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS. IF FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP
TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.
 
A FLOOD WARNING MEANS THAT FLOODING IS OCCURRING. MOST 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 9:14 PM CDTFlash Flood WarningSJTMenard5 hr
Aug 5, 9:58 PM CDTFlash Flood WarningSJTSchleicher, Sutton9 hr
Aug 5, 9:58 PM CDTFlash Flood WarningSJTMenard9 hr
Aug 6, 6:44 AM CDTFlash Flood WarningSJTMenard, Schleicher, Sutton10 hr
Aug 6, 4:12 PM CDTFlash Flood WarningSJTMenard6 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.