Alert archive / Texas / Flash Flood Warnings in 1987

Flash Flood Warning 62, NWS Austin/San Antonio, TX

June 8, 1987Frio County, La Salle County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 8, 1987, 1:06 PM CDT for Frio County, La Salle County, Texas. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jun 8, 1987, 1:06 PM CDT (18:06 UTC)
Expired
Jun 8, 1987, 5:00 PM CDT
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Frio County, TX, La Salle 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, 6.1 hours before the alert went out and 189 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 1987-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 69 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 1987-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 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
69 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
44 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 081806
FFWSAT
TXC163-283-082200-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
106 PM CDT MON JUN 8 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...FRIO...LASALLE
 
AS OF 1 PM CDT...NEARLY 3 INCHES OF RAIN /2.67/ HAD FALLEN AT COTULLA
IN LASALLE COUNTY DURING THE PAST 4 HOURS.  THE THUNDERSTORMS
PRODUCING THESE HEAVY RAINS HAVE MOVED INTO FRIO COUNTY AT THIS TIME.
FLASH FLOODING OF CREEKS LEADING INTO THE NUECES AND FRIO RIVERS...AS
WELL AS FLOODING OF THE NUECES RIVER FROM COTULLA DOWNSTREAM...AND
THE FRIO RIVER FROM DERBY DOWNSTREAM...WILL LIKELY OCCUR THIS
AFTERNOON.
 
A FLASH FLOOD WATCH IS IN EFFECT THIS AFTERNOON AND TONIGHT FOR MUCH
OF SOUTH TEXAS.
 
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.
 
DANGEROUS LIGHTNING AND GUSTY WINDS OFTEN ACCOMPANY FLASH FLOOD
PRODUCING THUNDERSTORMS.
 
PLEASE LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO STATION
FOR LATER STATEMENTS OR WARNINGS REGARDING THIS SEVERE WEATHER EVENT.

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 8, 11:01 AM CDT, 2 hours 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1100 AM CDT MON JUN 8 1987

NUMEROUS SHOWERS AND THUNDERSTORMS CONTINUE TO FORM ACROSS MUCH OF
SOUTH TEXAS THIS FORENOON.  MOST OF THE STRONGER THUNDERSTORMS ARE
LOCATED SOUTHWEST OF SAN ANTONIO...IN FRIO...LASALLE AND DIMMIT
COUNTIES.

ALTHOUGH NO SEVERE WEATHER IS FORECAST WITH THESE THUNDERSTORMS...
SOME COULD CONTAIN GUSTY WINDS...BRIEF HEAVY RAINFALL AND LIGHTNING.

PERSONS NEAR THE FRIO...NUECES AND SABINAL RIVERS SHOULD BE ON THE
LOOKOUT FOR THESE THUNDERSTORMS AND REACT ACCORDINGLY.  BOATERS AND
FISHERMEN ON CHOKE CANYON RESERVOIR SHOULD MOVE TO SHORE OR AWAY FROM
THE WATER IF WINDS PICK UP OR LIGHTNING IS SIGHTED OR THUNDER HEARD.

THIS ACTIVITY IS EXPECTED TO CONTINUE THROUGHOUT THE AFTERNOON INTO
TONIGHT.  SHOWERS AND THUNDERSTORMS WILL DEVELOP AS FAR NORTH AS SAN
ANTONIO AND AUSTIN AND THE ADJACENT HILL COUNTRY AND EDWARDS PLATEAU...
SO BOATERS AND FISHERMEN ON CALAVERAS...BRAUNIG...MCQUEENEY...CANYON
AND MEDINA LAKES SHOULD BE ALERT FOR APPROACHING WEATHER.

GOLFERS SHOULD BE READY TO GET OFF THE COURSE IF LIGHTNING IS SIGHTED
OR THUNDER HEARD.  CAMPERS AND HIKERS NEAR THE FLOOD PLAINS OF RIVERS
AND CREEKS SHOULD MOVE TO HIGHER GROUND.

THESE ADDITIONAL THUNDERSTORMS COULD POSE A THREAT TO SOUTH CENTRAL
TEXAS COUNTIES THAT RECEIVED HEAVY RAIN AND FLOODING LAST WEEK...SO
PLEASE STAY TUNED...A FLASH FLOOD WATCH MAY BE REQUIRED DURING THE
AFTERNOON.  UPDATED RIVER FLOOD BULLETINS WILL ALSO BE ISSUED AS
CONDITIONS WARRANT.

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.