Alert archive / Texas / Flash Flood Warnings in 1986

Flash Flood Warning 38, NWS Austin/San Antonio, TX

June 6, 1986Bexar County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 6, 1986, 11:09 PM CDT for Bexar County, Texas. It was in force for 111 min.

The area

The counties it named.

The facts

Issued
Jun 6, 1986, 11:09 PM CDT (04:09 UTC)
Expired
Jun 7, 1986, 1:00 AM CDT
In force
111 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Bexar 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, 4.2 hours before the alert went out and 171 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 1986-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2162 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 00:00Z on 1986-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
2162 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
803 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 070409
FFWSAT
TXC029-060600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1109 PM CDT FRI JUN 6 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 100 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

SOUTH CENTRAL TEXAS...BEXAR

AT 1105 PM CDT A LINE OF STRONG THUNDERSTORMS WAS MOVING ACROSS SAN
ANTONIO AND BEXAR COUNTY.  RAINFALL OF NEAR TWO INCHES PER HOUR HAS
BEEN RECORDED AT THE WEATHER OFFICE.  THIS LINE WAS MOVING
SOUTHEAST AT 20 MILES AN HOUR.

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR HAS BEEN
REPORTED.  TAKE NECESSARY PRECAUTIONS AS REQUIRED TO PROTECT LIFE
AND PROPERTY.

REMEMBER..DEATHS DURING FLASH FLOODING ARE FREQUENTLY RELATED TO
MOTORISTS DRIVING INTO FLOODED LOW WATER CROSSINGS.

DANGEROUS LIGHTNING AND GUSTY WINDS OFTEN ACCOMPANY FLASH FLOOD
PRODUCING THUNDERSTORMS.

IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE
IMMEDIATELY.  YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY
TO RELAY YOUR SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER
SERVICE OFFICE.

PLEASE LISTEN TO YOUR LOCAL RADIO..TV OR NOAA WEATHER RADIO STATION
FOR LATER STATEMENTS OR WARNINGS REGARDING THIS HEAVY RAIN 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 6, 8:23 PM CDT, 2 hours 46 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
823 PM CDT FRI JUN 6 1986

STRONG THUNDERSTORMS WITH HEAVY RAINS WERE ABOUT 20 MILES NORTHEAST OF
LOMA ALTA ON HIGHWAY 277.  THE HEAVY RAINS CONTINUED IN THIS AREA FOR
ABOUT 2 HOURS. SOME REPORTS OF UP TO 2 AND 1/2 INCHES HAVE BEEN
REPORTED WITH THESE THUNDERSTORMS IN A HOUR.

PERSONS DRIVING ON HIGHWAY 277 NORTH..OR VACATIONING ALONG THE DRY
DEVILS RIVER IN THE NORTHEAST PART OF VAL VERDE COUNTY SHOULD BE ALERT
TO THE POSSIBILITY OF FLOODED LOW WATER CROSSINGS..OR RAPID RISES OF
WATER IN DRAWS AND CREEK BEDS.

IF YOU OBSERVE ANY AMOUT WATER COMING DOWN A DRAW OR CREEK BED IN
NORTHEAST PART OF VAL VERDE COUNTY..DO NOT WAIT..MOVE TO HIGHER GROUND
IMMEDIATELY. A SMALL TRICKLE CAN BECOME A LIFE THREATING TORRENT OF
WATER IN MINUTES.

YOU SHOULD REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY OR TO
THE NATIONAL WEATHER SERVICE.
Special weather statement, Jun 6, 8:24 PM CDT, 2 hours 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
823 PM CDT FRI JUN 6 1986

STRONG THUNDERSTORMS WITH HEAVY RAINS WERE ABOUT 20 MILES NORTHEAST OF
LOMA ALTA ON HIGHWAY 277.  THE HEAVY RAINS CONTINUED IN THIS AREA FOR
ABOUT 2 HOURS. SOME REPORTS OF UP TO 2 AND 1/2 INCHES HAVE BEEN
REPORTED WITH THESE THUNDERSTORMS IN A HOUR.

PERSONS DRIVING ON HIGHWAY 277 NORTH..OR VACATIONING ALONG THE DRY
DEVILS RIVER IN THE NORTHEAST PART OF VAL VERDE COUNTY SHOULD BE ALERT
TO THE POSSIBILITY OF FLOODED LOW WATER CROSSINGS..OR RAPID RISES OF
WATER IN DRAWS AND CREEK BEDS.

IF YOU OBSERVE ANY AMOUNT WATER COMING DOWN A DRAW OR CREEK BED IN
NORTHEAST PART OF VAL VERDE COUNTY..DO NOT WAIT..MOVE TO HIGHER GROUND
IMMEDIATELY. A SMALL TRICKLE CAN BECOME A LIFE THREATING TORRENT OF
WATER IN MINUTES.

YOU SHOULD REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY OR TO
THE NATIONAL WEATHER SERVICE.
Special weather statement, Jun 6, 9:34 PM CDT, 1 hour 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
935 PM CDT JUN 6 1986

         ...THUNDERSTORMS CONTINUE TO POSE A THREAT...

SHOWERS AND A FEW THUNDERSTORMS CONTINUE TO MOVE DEEPER INTO SOUTH
CENTRAL TEXAS THIS EVENING.  AT 930 PM CDT..A LINE OF THUNDERSTORMS WAS
LOCATED FROM NEAR BLANCO SOUTHWEST TO BOERNE.  ALTHOUGH SHOWING SIGNS
OF WEAKENING OVER THE PAST TWO HOURS..SOME OF THESE THUNDERSTORMS STILL
CARRY THE POTENTIAL OF PRODUCING LOCALLY HEAVY RAINFALL.  THIS LINE WAS
CONTAINED WITHIN A BROAD AREA OF LIGHT TO MODERATE SHOWERS THAT COVERED
MUCH OF REAL..KERR..KENDALL AND BANDERA COUNTIES.  MOVEMENT CONTINUES
SOUTHEAST..BUT AT A FASTER RATE OF 20 MILES AN HOUR.

PERSONS LOCATED WITHIN LOW-LYING OR FLOOD-PRONE AREAS..ESPECIALLY IN
AND NEAR THE RIVER PLAINS OF THE GUADALUPE AND MEDINA RIVERS SHOULD BE
ALERT TO POSSIBLE FLOODING FOR THE NEXT FEW HOURS.  LOW WATER CROSSINGS
ARE ALSO SUSCEPTIBLE TO RAPID FLOODING AND MOTORISTS SHOULD NOT ATTEMPT
TO DRIVE ACROSS ROADS INUNDATED BY WATER OF UNKNOWN DEPTH.

ONE FINAL REMINDER..WITH THE INCREASE IN SPEED OF THE LINE OF STORMS..
STRONG AND POSSIBLY DAMAGING WIND NOW BECOMES A REAL THREAT.

STAY TUNE^D TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS AND/OR
WARNINGS.
Special weather statement, Jun 6, 10:17 PM CDT, 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
1017 PM CDT FRI JUN 6 1986

AT 1015 PM CDT RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN 50
MILES NORTH OF DEL RIO MOVING TO THE SOUTH SOUTHEAST AT 20 MPH.
GLASSCOCK RANCH..12 MILES NORTHEAST OF JUNO..REPORTED ONE INCH OF RAIN
IN 40 MINUTES AT 940 PM.

HEAVY RAIN..SMALL HAIL..STRONG WINDS AND FREQUENT LIGHTNING ARE
POSSIBLE WITH THESE STORMS.

BE ALERT TO THE POSSIBILIT}Y OF FLOODED LOW WATER CROSSINGS..OR RAPID
RISES OF WATER IN DRAWS AND CREEK BEDS.
Special weather statement, Jun 6, 10:55 PM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1050 PM CDT JUN 6 1986

         ...THUNDERSTORMS MOVING ACROSS BEXAR COUNTY...
AT 1050 PM CDT RADAR INDICATED STRONG THUNDERSTORMS WITH LOCALLY HEAVY
RAINFALL MOVING ACROSS BEXAR COUNTY.  THESE THUNDERSTORMS PRODUCED
ALMOST ONE INCH OF RAIN IN THE LEON SPRINGS AREA IN JUST OVER HALF AN
HOUR.

THE THUNDERSTORMS ARE MOVING SOUTHEAST AT 20 MPH AND WILL BE MOVING
ACROSS THE SAN ANTONIO METROPOLITAN AREA UNTIL ABOUT 1 AM.  IN ADDITION
TO LOCALLY HEAVY RAIN..THESE THUNDERSTORMS WILL PRODUCE STRONG GUSTY
WINDS AND DANGEROUS LIGHTNING.

MOTORISTS ARE ESPECIALLY URGED TO AVOID LOW WATER CROSSINGS WHICH MAY
FLOOD RAPIDLY BECAUSE OF THE RECENT HEAVY RAINS.

STAY TUNED FOR ADDITIONAL STATEMENTS OR WARNINGS.
Special weather statement, Jun 6, 10:56 PM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1050 PM CDT JUN 6 1986

         ...THUNDERSTORMS MOVING ACROSS BEXAR COUNTY...
AT 1050 PM CDT RADAR INDICATED STRONG THUNDERSTORMS WITH LOCALLY HEAVY
RAINFALL MOVING ACROSS BEXAR COUNTY.  THESE THUNDERSTORMS PRODUCED
ALMOST ONE INCH OF RAIN IN THE LEON SPRINGS AREA IN JUST OVER HALF AN
HOUR.

THE THUNDERSTORMS ARE MOVING SOUTHEAST AT 20 MPH AND WILL BE MOVING
ACROSS THE SAN ANTONIO METROPOLITAN AREA UNTIL ABOUT 1 AM.  IN ADDITION
TO LOCALLY HEAVY RAIN..THESE THUNDERSTORMS WILL PRODUCE STRONG GUSTY
WINDS AND DANGEROUS LIGHTNING.

MOTORISTS ARE ESPECIALLY URGED TO AVOID LOW WATER CROSSINGS WHICH MAY
FLOOD RAPIDLY BECAUSE OF THE RECENT HEAVY RAINS.

STAY TUNED FOR ADDITIONAL STATEMENTS OR WARNINGS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 8:27 PM CDTFlash Flood WarningEWXGillespie3 hr
Jun 6, 10:29 PM CDTFlash Flood WarningEWXBlanco91 min
Jun 6, 10:36 PM CDTFlash Flood WarningEWXEdwards2 hr
Jun 7, 12:55 AM CDTFlash Flood WarningEWXVal Verde2 hr

Nearby

Flash Flood Warnings in Texas, 1986Every flash flood warning in 1986

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.