Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 51, NWS Austin/San Antonio, TX

September 22, 1990Edwards County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 22, 1990, 10:31 AM CDT for Edwards County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Sep 22, 1990, 10:31 AM CDT (15:31 UTC)
Expired
Sep 22, 1990, 1:30 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Edwards 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, 3.5 hours before the alert went out and 86 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 1990-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1990-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
5 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 KSAT 221533
FFWSAT
TXC137-221830-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1031 AM CDT SAT SEP 22 1990
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  130 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH TEXAS
          ...EDWARDS
 
AT 10:30 THIS MORNING...MODERATE TO HEAVY RAINS CONTINUED IN WESTERN
EDWARDS COUNTY. ONE TO TWO INCHES OF RAIN HAVE LIKELY FALLEN PORTIONS
OF THE COUNTY. SOME WATER IS BEGINNING TO ACCUMULATE IN LOW WATER
CROSSING AREAS. SINCE THESE MODERATE TO HEAVY RAINS ARE EXPECTED TO
CONTINUE FOR THE NEXT TWO OR THREE HOURS...SOME FLOODING OF LOW LYING
AREAS IS EXPECTED.
 
A FLASH FLOOD WATCH CONTINUES THROUGH TONIGHT FOR THE TEXAS HILL
COUNTRY.
 
 
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.

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, Sep 22, 5:33 AM CDT, 4 hours 58 minutes before
TXZ034>049-054-221800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
530 AM CDT SAT SEP 22 1990

              ...AUTUMN WEATHER RIGHT ON SCHEDULE...

TODAY IS THE LAST FULL DAY OF SUMMER FOR SOUTH TEXAS.  FALL OFFICIALLY
BEGINS AT 155 AM SUNDAY MORNING.

THE WEATHER PATTERNS AFFECTING SOUTH TEXAS APPEAR TO BE RIGHT IN STEP
WITH THE CHANGE IN SEASONS.  A COLD FRONT WILL BE MOVING INTO SOUTH
CENTRAL TEXAS THIS AFTERNOON BRINGING THE FIRST TASTE OF FALL TO OUR AREA.
SKIES SHOULD CLEAR RAPIDLY BEHIND THE SHOWERS AND THUNDERSTORMS EXPECTED
WITH THE FRONT LEAVING A REFRESHINGLY COOL AND DRY AIR MASS IN PLACE.

THE AUTUMNLIKE WEATHER...HIGHS IN THE EIGHTIES AND LOWS IN THE SIXTIES...
IS EXPECTED TO LAST INTO NEXT WEEK.  WHILE A RETURN TO NINETY DEGREE PLUS
TEMPERATURES IS STILL POSSIBLE...IT LOOKS AS THOUGH SUMMER HAS FINALLY
RETIRED FOR ANOTHER YEAR.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 22, 8:10 AM CDTFlash Flood WarningEWXVal Verde4 hr
Sep 22, 12:25 PM CDTFlash Flood WarningEWXVal Verde4 hr
Sep 22, 4:15 PM CDTFlash Flood WarningEWXVal Verde4 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.