Alert archive / Texas / Flash Flood Warnings in 1986

Flash Flood Warning 65, NWS Austin/San Antonio, TX

October 5, 1986Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Oct 5, 1986, 8:00 PM CDT for Val Verde County, Texas. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Oct 5, 1986, 8:00 PM CDT (01:00 UTC)
Expired
Oct 6, 1986, 1:00 AM CDT
In force
5 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Val Verde 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, 1.0 hours before the alert went out and 66 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 1986-10-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 115 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 1986-10-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 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
115 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
559 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
209 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDRT 060102
FFWDRT
TXC465-060600-

BULLETIN - EBS ACTIVITATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DEL RIO TX
800 PM CDT SUN OCT 5 1986

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

SOUTHCENTRAL TEXAS...VAL VERDE.

AT 755 PM CDT MODERATE RAINSHOWERS WERE OBSERVED IN DEL RIO. 
RADAR CONTINUED TO INDICATE THUNDERSTORMS THROUGHOUT VAL VERDE 
COUNTY.

SAN FELIPE CREEK CONTINUES TO RISE. THE RAIN IS EXPECTED TO 
CONTINUE THROUGH THE NIGHT AND FLOODING IN THE SAN FELIPE CREEK AREA
IS LIKELY. PEOPLE LIVING IN THE SAN FELIPE CREEK AREA SHOULD KEEP A
LOOKOUT TONIGHT AND BE PREPARED TO MOVE TO HIGHER GROUND IF FLOODING
OCCURS.

 PARTS OF NORTHERN VAL VERDE COUNTY HAVE RECEIVED OVER 10
INCHES OF RAIN. GLASSCOCK RANCH...12 MILES NORTH OF JUNO...REPORTED
10.29 INCHES. SEVERAL ROADS AND HIGHWAYS IN VAL VERDE COUNTY ARE
CLOSED OR WASHED OUT. TRAVEL ANYWHERE IN NORTHERN VAL VERDE COUNTY IS
STRONGLY DISCOURAGED.

THE DEVILS RIVER AT BAKERS CROSSING WAS AT 20.0 FEET AT 724 PM CDT. 
FLOODING IS OCCURING ALONG THE DEVILS RIVER.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES..DIPS..OR LOW SPOTS IF WATER COVERS THE
ROAD. NEVER TRY TO CROSS A FLOWING STREAM..EVEN A SMALL ONE..ON FOOT.
TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

A FLASH FLOOD WATCH CONTINUES IN EFFECT FOR THE TEXAS HILL COUNTRY
AND ADJACENT EDWARDS PLATEAU NORTHWEST OF A EAGLE PASS...KERRVILL
...LLANO LINE. PEOPLE WITHIN THE WATCH AREA SHOULD CONTINUE TO
MONITOR NATIONAL WEATHER SERVICE RADIO...LOCAL RADIO STATIONS AND TV
BROADCASTS FOR LATER INFORMATION.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 5, 11:08 PM CDTFlash Flood WarningEWXMedina4 hr
Oct 5, 11:27 PM CDTFlash Flood WarningEWXFrio4 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.