Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 36, NWS San Angelo, TX

August 4, 1990Menard County, Schleicher County, Texas

NWS San Angelo, TX issued this flash flood warning at Aug 4, 1990, 5:07 PM CDT for Menard County, Schleicher County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Aug 4, 1990, 5:07 PM CDT (22:07 UTC)
Expired
Aug 4, 1990, 7:15 PM CDT
In force
2 hr
Issued by
NWS San Angelo, TX
Area
Whole counties

Counties Menard County, TX, Schleicher 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, 10.1 hours before the alert went out and 181 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 1990-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1191 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 1990-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
1191 J/kg
Mixed-layer CIN
-104 J/kg
Mixed-layer LCL
847 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 4, 12:36 PM CDT, 4 hours 31 minutes before
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Special weather statement, Aug 4, 1:34 PM CDT, 3 hours 33 minutes before
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Special weather statement, Aug 4, 2:28 PM CDT, 2 hours 39 minutes before
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Special weather statement, Aug 4, 2:33 PM CDT, 2 hours 34 minutes before
SPECIAL WEATHER STATEMENT COR...MOVEMENT
NATIONAL WEATHER SERVICE SAN ANGELO, TX
232 PM CDT SAT AUG 04 1990
TXZ016-017-029-034-018-042030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
227 PM CDT SAT AUG 4 1990

AT 220 PM SAN ANGELO RADAR INDICATED THUNDERSTORMS ACROSS THE SOUTHERN
HALF OF THE CONCHO VALLEY. THE STRONGEST STORMS WERE NORTH AND
NORTHWEST OF ELDORADO IN SCHLEICHER COUNTY. OTHER THUNDERSTORMS WERE
NEAR EDEN IN CONCHO COUNTY, SOUTHWEST OF SONORA IN SUTTON COUNTY, AND
SOUTHEAST OF IRRAN IN CROCKETT COUNTY. MOVEMENT WAS TO THE EAST AT 10
MILES AN HOUR.

THESE THUNDERSTORMS ARE LIKELY PRODUCING VERY HEAVY RAIN, STRONG WINDS
AND DANGEROUS LIGHTING. THE HEAVY RAIN FROM THESE STROMS MAY CAUSE
NORALLY DRY CREEKS, ARROYOS, AND LOW WATER CROSSINGS TO BE FILLED WITH
RAPIDLY FLOWING WATER. DO NOT ATTEMPT TO CROSS LOW WATER CROSSINGS IF
WATER COVERS THE ROADWAY.

KEEP LISTENING TO YOUR NOAA WEATHER RADIO OR YOUR LOCAL RADIO AND
TELEVISIONS STATIONS FOR FURTHER WEATHER UPDATES.
Special weather statement, Aug 4, 3:38 PM CDT, 1 hour 29 minutes before
TXZ012-015-019-024-029-030-042140-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABILENE TX
340 PM CDT SAT AUG 4 1990

THUNDERSTORMS HAD INCREASED RAPIDLY IN INTENSITY OVER SOUTHERN
CALLAHAN AND NORTHERN COLEMAN AND BROWN COUNTIES AT 335 PM CDT.

STRONGEST THUNDERSTORM WAS LOCATED JUST WEST OF CROSS PLAINS AND
WAS MOVING SLOWLY EASTWARD AT 10 TO 15 MPH.
HEAVY RAIN...STRONG GUSTY WINDS...CLOUD TO GROUND LIGHTNING...AND
POSSIBLE SMALL HAIL CAN BE EXPECTED.

REMEMBER...HEAVY RAINS FLOOD ROADS QUICKLY. DO NOT ATTEMPT TO DRIVE
ACROSS MOVING WATER OF UNKNOWN DEPTH.

OTHER THUNDERSTORMS WERE MOVING SOUTHEAST INTO NORTHERN COUNTIES
OF THE BIG COUNTRY AREA.

STAY TUNED TO NOAA WEATHEDR RADIO FOR THE LATEST WEATHER INFORMATION.
Special weather statement, Aug 4, 4:37 PM CDT, 30 minutes before
TXZ012-015-019-024-029-030-050035-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABILENE TX
435 PM CDT SAT AUG 4 1990

AT 430 PM CDT NUMEROUS STRONG THUNDERSTORMS AND RAINSHOWERS WERE OVER
PORTIONS OF CALLAHAN...COLEMAN AND BROWN COUNTIES. THE STORMS WERE
IN THE AREA FROM COLEMAN TO SOUTH OF BAIRD TO RISING STAR AND CROSS
PLAINS TO NEAR MAY.

STRONG GUSTY WIND...SMALL HAIL AND VERY HEAVY RAIN CAN BE EXPECTED
NEAR THESE STORMS.

MOVEMENT WAS EAST AT 10-15 MPH.

STAY TUNED TO RADIO...TV OR NOAA WEATHER RADIO FOR THE LATEST WEATHER
INFORMATION.

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.