Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 45, NWS Austin/San Antonio, TX

June 3, 1987Gonzales County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 3, 1987, 2:09 PM CDT for Gonzales County, Texas. It was in force for 111 min.

The area

The counties it named.

The facts

Issued
Jun 3, 1987, 2:09 PM CDT (19:09 UTC)
Expired
Jun 3, 1987, 4:00 PM CDT
In force
111 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Gonzales 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

Victoria Regiona, TX (KVCT), launched 12:00Z, 7.2 hours before the alert went out and 89 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, Victoria Regiona, TX at 12:00Z on 1987-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 829 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, Victoria Regiona, TX at 12:00Z on 1987-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
829 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
645 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 031909
FFWSAT
TXC177-032115-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
209 PM CDT WED JUN 3 1987
 
THE NATIONAL WEATHER SERVICE HAS EXTENDED THE FLASH FLOOD WARNING
EFFECTIVE UNTIL  400 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH TEXAS
          ...GONZALES
 
 
A LINE OF VERY HEAVY THUNDERSTORMS CONTINUES TO MOVE ACROSS GONZALES
COUNTY AND ANOTHER ONE TO TWO INCHES OF RAINFALL IS EXPECTED IN SOME
AREAS BEFORE THE LINE MOVES OUT OF THE COUNTY.  SOME CLEARING CAN BE
EXPECTED BY 400 PM.
 
THE FLASH FLOOD WARNINGS FOR COMAL...GUADALUPE...KARNES...AND WILSON
COUNTIES HAVE EXPIRED.  LIGHT TO MODERATE RAINS WILL CONTINUE IN
THESE COUNTIES FOR THE NEXT HOUR OR TWO.
 
A FLASH FLOOD WARNING CONTINUES IN EFFECT FOR BANDERA...KENDALL...
AND MEDINA COUNTIES UNTIL 245 PM AND FOR KERR COUNTY UNTIL 400 PM.
LIGHT TO MODERATE RAIN CONTINUES IN THESE COUNTIES AND THE RAIN WILL
LIKELY TAPER OFF SLOWLY DURING THE REMAINDER OF THE AFTERNOON.
 
A FLASH FLOOD WATCH CONTINUES THROUGH THIS AFTERNOON FOR THE TEXAS
HILL COUNTRY AND ADJACENT AREAS OF SOUTHCENTRAL TEXAS.  THE WATCH
WILL LIKELY BE EXTENDED THROUGH TONIGHT.
 
PEOPLE IN OR NEAR. THE WATCH ARE URGED TO LISTEN FOR THE LATEST
WEATHER INFORMATION AND BE PREPARED TO SEEK HIGHER GROUND SHOULD
RISING WATER BE OBSERVED OR WARNINGS ISSUED.

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, Jun 3, 9:16 AM CDT, 4 hours 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
810 AM CDT WED JUN 3 1987

...A FLASH FLOOD WATCH REMAINS IN EFFECT TODAY...

WEATHER RADAR SHOWS A BAND OF SHOWERS WITH SOME LOCALIZED HEAVY RAIN
EXTENDING FROM LA GRANGE TO LOCKHART AND LULING AND WEST TO NEW BRAUNFELS
MODERATE TO HEAVY RAINS OVER THE HILL COUNTRY HAVE PROMPTED FLASH FLOOD
WARNINGS FOR THE SAN ANTONIO AREA AND SEVERAL COUNTIES TO THE WEST OF
BEXAR COUNTY.

SOME OF THAT HEAVIER RAIN EXTENDS NORTH INTO WESTERN GILLESPIE COUNTY...
AND THAT AREA WILL BE WATCHED CLOSELY BY THE AUSTIN WEATHER SERVICE AS
THE RAIN WILL BE PRODUCING ANOTHER RISE ON THE PEDERNALES RIVER.

THERE IS NO HEAVY RAIN THREATENING THE CITY OF AUSTIN FOR THE NEXT
FEW HOURS... BUT WE STILL HAVE A 70 PERCENT CHANCE OF THUNDERSTORMS
LATER IN THE DAY.
Special weather statement, Jun 3, 12:09 PM CDT, 2 hours before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1110 AM CDT WED JUN 3 1987

...A FLASH FLOOD WATCH REMAINS IN EFFECT TODAY...

WEATHER RADAR SHOWS A BAND OF SHOWERS WITH SOME MODERATE AND HEAVY
RAIN SURROUNDING THE CITY IN A SEMI CIRCLE TO THE SOUTH. THAT RAIN
IS IN A 50 MILE WIDE BAND AND EXTENDS FROM GIDDINGS TO LOCKHART AND
LULING AND THEN NORTHWEST TO SOUTH OF BLANCO AND NEAR KERRVILLE.

THIS RAIN AREA IS MOVING NORTH AT 10 TO 15 MILES AND WILL BE MOVING
ACROSS THE CITY OF AUSTIN THROUGH THE EARLY AND MIDDLE AFTERNOON HOURS.
RAINFALL RATES ARE MOSTLY ABOUT 1/4 INCH PER HOUR BUT SOME OF THE
HEAVIEST SHOWERS WILL PRODUCE UP TO 1 INCH IN AN HOUR.

SINCE OUR AREA IS ALREADY SATURATED CREEKS AND CITY STREETS COULD FLOOD
QUITE RAPIDLY IN THE HEAVIER SHOWERS. MOTORISTS SHOULD STAY ALERT FOR
RISING WATER THIS AFTERNOON.
Special weather statement, Jun 3, 12:14 PM CDT, 1 hour 55 minutes before
SPECIAL WEATHER STATEMENT... CORRECTED FOR TIME OF RELEASE.
NATIONAL WEATHER SERVICE AUSTIN TX
1210 PM CDT WED JUN 3 1987

...A FLASH FLOOD WATCH REMAINS IN EFFECT TODAY...

WEATHER RADAR SHOWS A BAND OF SHOWERS WITH SOME MODERATE AND HEAVY
RAIN SURROUNDING THE CITY IN A SEMI CIRCLE TO THE SOUTH. THAT RAIN
IS IN A 50 MILE WIDE BAND AND EXTENDS FROM GIDDINGS TO LOCKHART AND
LULING AND THEN NORTHWEST TO SOUTH OF BLANCO AND NEAR KERRVILLE.

THIS RAIN AREA IS MOVING NORTH AT 10 TO 15 MILES AND WILL BE MOVING
ACROSS THE CITY OF AUSTIN THROUGH THE EARLY AND MIDDLE AFTERNOON HOURS.
RAINFALL RATES ARE MOSTLY ABOUT 1/4 INCH PER HOUR BUT SOME OF THE
HEAVIEST SHOWERS WILL PRODUCE UP TO 1 INCH IN AN HOUR.

SINCE OUR AREA IS ALREADY SATURATED CREEKS AND CITY STREETS COULD FLOOD
QUITE RAPIDLY IN THE HEAVIER SHOWERS. MOTORISTS SHOULD STAY ALERT FOR
RISING WATER THIS AFTERNOON.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 2, 7:16 PM CDTFlash Flood WarningEWXBexar3 hr
Jun 2, 7:17 PM CDTFlash Flood WarningEWXFayette3 hr
Jun 2, 9:20 PM CDTFlash Flood WarningEWXGuadalupe3 hr
Jun 2, 10:16 PM CDTFlash Flood WarningEWXGonzales, Wilson2 hr
Jun 2, 10:16 PM CDTFlash Flood WarningEWXBexar2 hr
Jun 3, 3:04 AM CDTFlash Flood WarningEWXEdwards, Kerr, Real116 min
Jun 3, 4:00 AM CDTSevere Thunderstorm WarningEWXVal Verde60 min
Jun 3, 4:20 AM CDTFlash Flood WarningEWXVal Verde4 hr
Jun 3, 4:57 AM CDTFlash Flood WarningEWXKerr, Real2 hr
Jun 3, 5:22 AM CDTFlash Flood WarningEWXUvalde2 hr
Jun 3, 7:56 AM CDTFlash Flood WarningEWXMedina3 hr
Jun 3, 8:00 AM CDTFlash Flood WarningEWXVal Verde4 hr
Jun 3, 9:56 AM CDTFlash Flood WarningEWXWebb2 hr
Jun 3, 10:44 AM CDTFlash Flood WarningEWXBandera, Kendall4 hr
Jun 3, 10:44 AM CDTFlash Flood WarningEWXMedina4 hr
Jun 3, 12:54 PM CDTFlash Flood WarningEWXKerr3 hr
Jun 3, 2:24 PM CDTTornado WarningEWXLavaca56 min

Nearby

Flash Flood Warnings in Texas, 1987Every flash flood warning in 1987

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.