Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 32, NWS Austin/San Antonio, TX

June 2, 1987Guadalupe County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 2, 1987, 9:20 PM CDT for Guadalupe County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 2, 1987, 9:20 PM CDT (02:20 UTC)
Expired
Jun 3, 1987, 12:30 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Guadalupe 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 00:00Z, 2.3 hours before the alert went out and 130 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 00:00Z on 1987-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 720 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 00:00Z on 1987-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.1939Sfc1 km3 km6 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
720 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
774 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
87 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 030220
FFWSAT
TXC187-030530-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
920 PM CDT TUE JUN 2 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 1230 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH TEXAS
          ...GUADALUPE
 
THE SHERIFFS DEPARTMENT IN SEGUIN REPORTS MANY LOW WATER CROSSINGS IN
GUADALUPE COUNTY REMAIN FLOODED AT THIS TIME.  ALTHOUGH ONLY LIGHT
RAIN IS FALLING AT THE MOMENT...FLASH FLOODING IS EXPECTED TO
CONTINUE TO PAST MIDNIGHT TONIGHT.
 
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, Jun 2, 3:57 PM CDT, 5 hours 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
350 PM CDT TUE JUN 2 1987

...SMALL STREAM AND URBAN FLOOD STATEMENT...

WEATHER RADAR SHOWS WIDESPREAD MODERATE RAIN OVER A LARGE
PORTION OF CENTRAL TEXAS... THE HEAVIEST RAINFALL IS ONCE AGAIN
SOUTH THROUGH WEST OF AUSTIN AND IS MOVING NORTH. THAT RAIN EXTENDS
FROM LULING TO SEGUIN... CANYON LAKE AND DRIPPING SPRINGS. SEVERAL
OF THESE SHOUWES HAVE RAINFALL RATES OF 1 TO 2 INCHES AN HOUR.

THE CITY OF AUSTIN IS JUST ABOUT SATURATED... SOME CITY STREETS HAVE
BEEN BARRICADED AND ALL CREEKS ARE AT OR NEAR BANKFULL. ADDITIONAL
RAINS OF ONLY 1/2 TO 1 INCH WILL LIKELY CAUSE ADDITIONAL FLOODING.

MOTORISTS SHOULD USE EXTREME CAUTION AkT LOW WATER CROSSINGS AND BE ALERT
ON CITY STREETS WITH POOR DRAINAGE UNTILL HIGH WATER SIBSIDES.

A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TONIGHT.
Special weather statement, Jun 2, 4:47 PM CDT, 4 hours 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
450 PM CDT TUE JUN 2 1987

...SMALL STREAM AND URBAN FLOOD STATEMENT...

WEATHER RADAR SHOWS WIDESPREAD MODERATE RAIN OVER A LARGE
PORTION OF CENTRAL TEXAS... THE HEAVIEST RAINFALL  EXTENDS FROM
COLLEGE STATION TO LULING... JUST NORTH OF SAN ANTONIO AND OVER THE
HILL COUNTRY TO BLANCO AND JOHNSON CITY. SEVERAL OF THESE HEAVIER
SHOUWES HAVE RAINFALL RATES OF 1 TO 2 INCHES AN HOUR.

THE CITY OF AUSTIN REMAINS JUST ABOUT SATURATED... SOME CITY STREETS HAVE
BEEN BARRICADED AND ALL CREEKS ARE AT OR NEAR BANKFULL. ADDITIONAL
RAINS OF ONLY 1/2 TO 1 INCH WILL CAUSE ADDITIONAL FLOODING.

MOTORISTS SHOULD USE EXTREME CAUTION AT LOW WATER CROSSINGS AND BE ALERT
ON CITY STREETS WITH POOR DRAINAGE UNTILL HIGH WATER SIBSIDES.

A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TONIGHT.
Special weather statement, Jun 2, 6:14 PM CDT, 3 hours 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
615 PM CDT TUE JUN 2 1987

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

WEATHER RADAR SHOWS WIDESPREAD LIGHT TO MODERATE RAINS CONTINUING
OVER MOST OF CENTRAL TEXAS. THE HEAVIEST RAINFALL  EXTENDS FROM
BRYAN/COLLEGE STATION TO SMITHVILLE TO NEAR SAN ANTONIO. OTHER MODERATE
SHOWERS ARE LOCATED FROM DRIPPING SPRINGS TO COMFORT. THE SHOWERS TO
OUR SOUTHEAST ARE BUILDING SLOWLY TO THE SOUTH... WHILE THE SHOWERS
OVER THE HILL COUNTRY ARE MOVING SLOWLY NORTH.

RAIN HAS TAPERED OFF IN THE CITY OF AUSTIN BUT SOME CITY STREETS REMAIN
BARRICADED AND ALL CREEKS ARE AT OR NEAR BANKFULL.

MOTORISTS SHOULD STILL USE CAUTION AT LOW WATER CROSSINGS AND BE ALERT
ON CITY STREETS WITH POOR DRAINAGE UNTILL WATER SIBSIDES.
Special weather statement, Jun 2, 8:27 PM CDT, 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
835 PM CDT TUE JUN 2 1987

...A FLASH FLOOD WATCH HAS BEEN PLACED OVER VAL VERDE COUNTY
TONIGHT...

AT 820 PM CDT RADAR INDICATED NO SHOWERS OR THUNDERSTORMS IN OR NEAR
THE IMMEDIATE BORDERS OF VAL VERDE COUNTY.  HOWEVER...GROUPS OF
STRONG STORMS THAT WERE LYING FROM SOUTHEAST OF SAN ANGELO TO
SOUTHEAST OF SAN ANTONIO WERE DRIFTING SLOWLY SOUTHWEST TOWARDS
VAL VERDE COUNTY.

THE POSSIBLITY OF HEAVY RAINS WITH THESE STORMS IS HIGH AS THEY
ARE MOVING SLOWLY. ONCE HEAVY RAINS COMMENCE IN OUR AREA EVERYONE
DRIVING ON THE ROADS SHOULD BE PREPARED FOR THE FLOODING OF LOW WATER
CROSSINGS. THIS GROUPS OF STORMS TO THE NORTHEAST OF VAL VERDE COUNTY
HAVE BEEN PRODUCING AS MUCH AS 3 INCHES OF RAIN IN AN HOUR.

YOUR NATIONAL WEATHER SERVICE WILL ISSUE ADDITIONALS STATEMENTS...SO
STAY TUNED TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO.

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, 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, 2:09 PM CDTFlash Flood WarningEWXGonzales111 min
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.