Alert archive / Texas / Flash Flood Warnings in 1986

Flash Flood Warning 37, NWS Austin/San Antonio, TX

June 6, 1986Edwards County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 6, 1986, 10:36 PM CDT for Edwards County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 6, 1986, 10:36 PM CDT (03:36 UTC)
Expired
Jun 7, 1986, 1:00 AM CDT
In force
2 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 00:00Z, 3.6 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 00:00Z on 1986-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3153 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 00:00Z on 1986-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 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
3153 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1285 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
69 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 070336
FFWSAT
TXC137-070600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1036 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...EDWARDS

AT 1035 PM CDT..A STRONG THUNDERSTORM WAS LOCATED OVER NORTHERN
EDWARDS COUNTY..NEAR ROCKSPRINGS.  LITTLE OR NO MOVEMENT WAS NOTED
DURING THE PAST HOUR.  RAINFALL ESTIMATES OF GREATER THAN TWO
INCHES PER HOUR IS INDICATED FROM RADAR.

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, 6:33 PM CDT, 4 hours 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
625 PM CDT FRI JUN 06 1986

...ISOLATED HEAVY THUNDERSTORM OVER PARTS OF THE HILL COUNTRY...

AT 620 PM CDT RADAR INDICATED ISOLATED VERY HEAVY THUNDERSTORMS FROM
NORTH OF FREDERICKSBURG NORTHWEST THROUGH THE MASON AND BRADY AREA TO
SOUTHEAST OF SAN ANGELO. OTHER ISOLATED THUNDERSTORMS WERE LOCATED
NEAR TAYLOR AND NORTH OF COLLEGE STATION WITH ONLY LIGHT RAIN FROM
THE KILLEEN AND LAMPASAS AREA TO NEAR HAMILTON.

THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT NEAR 10 MPH.

FLOODING OF LOW WATER CROSSINGS IS POSSIBLE OVER SOUTHWESTERN LLANO
AND NORTHERN GILLESPIE COUNTIES. THERE IS ALSO THE POSSIBILITY OF
SOME LOW WATER CROSSINGS FLOODED IN LAMPASAS AND MILLS FROM HEAVY
THUNDERSTORMS IN THIS AREA LATE THIS AFTERNOON.

TRAVEL WITH CAUTION IN THESE AREAS THE NEXT FEW HOURS.
Special weather statement, Jun 6, 7:43 PM CDT, 2 hours 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
745 PM CDT FRI JUN 6 1986

A LINE OF THUNDERSTORMS WAS MOVING SOUTHEAST INTO NORTHERN EDWARDS AND
KERR COUNTIES.  REPORTS FROM LOCATIONS WITHIN KIMBLE COUNTY TO THE NORTH
INDICATED THAT SOME OF THESE THUNDERSTORMS PRODUCED RAIN OF NEAR TWO
INCHES IN LESS THAN AN HOUR.  THE STRONGEST STORMS EXTENDED FROM EAST OF
JUNCTION IN KIMBLE COUNTY TO JUST NORTH OF ROCKSPRINGS IN EDWARDS COUNTY.

RESIDENTS OF EDWARDS..KERR AND REAL COUNTIES SHOULD REMAIN ALERT TO THE
POSSIBILITY OF HEAVY RAIN.  LOW-LYING OR FLOOD-PRONE AREAS..ESPECIALLY
NEAR THE HEADWATERS OF THE GUADALUPE RIVER ARE PARTICULARLY VULNERABLE.
GROUND CONDITIONS ACROSS THE AREA ARE STILL RATHER MOIST FROM THE RAINS
OF EARLIER THIS WEEK..SO HEAVY RAIN IS LIKELY TO PRODUCE RAPID RUNOFF
..THUS ADDING TO ANY FLOOD PROBLEMS.

STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS OR WARNINGS.
Special weather statement, Jun 6, 8:23 PM CDT, 2 hours 13 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 12 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 2 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, 19 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.

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, 11:09 PM CDTFlash Flood WarningEWXBexar111 min
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.