Alert archive / Texas / Flash Flood Warnings in 1986

Flash Flood Warning 22, NWS Austin/San Antonio, TX

June 2, 1986Dimmit County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 2, 1986, 2:01 PM CDT for Dimmit County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 2, 1986, 2:01 PM CDT (19:01 UTC)
Expired
Jun 2, 1986, 5:00 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Dimmit 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, 7.0 hours before the alert went out and 149 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 1986-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1078 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 1986-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.19395878Sfc1 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
1078 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
768 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 021901
FFWSAT
TXC127-022200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
201 PM CDT MON JUN 2 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

TEXAS...DIMMIT

AT 250 PM CDT..A BROAD AREA OF SHOWERS AND A FEW THUNDERSTORMS WERE
LOCATED OVER WESTERN DIMMIT COUNTY.  ESTIMATES FROM RADAR INDICATE
THAT RAINFALL ON THE ORDER OF ONE TO TWO INCHES PER HOUR MAY BE
OCCURRING IN SOME OF THE HEAVIER STORMS.  THE ENTIRE AREA WAS
MOVING NORTH AT 15 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.

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 2, 12:22 PM CDT, 1 hour 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1210 PM CDT MON JUN 02 1986

FLASH FLOOD WATCH IS IN EFFECT FOR AUSTIN AND THE HILL COUNTRY.

AT 1205 PM CDT..WIDELY SCATTERED SHOWERS AND THUNDERSHOWERS WERE
INDICATED IN SOUTH TEAS FROM EAST OF DEL RIO ..COTULLA..TO CORPUS
CHRISTI AND ALONG THE TEXAS MIDDLE COAST INLAND TO NORTH OF WHARTON.
THE STORMS MOVING NORTH 15 MILES AN HOUR.

SIGNIFICANT RAINFALL DOES NOT APPEAR LIKELY WITHIN THE WATCH AREA
FOR THE NEXT FEW HOURS..ANOTHER UPPER AIR DISTURBANCE IS FORECAST TO
MOVE TOWARD SOUTH TEXAS FROM MEXICO LATER THIS AFTERNOON. IN ADDITION..
AFTERNOON SURFACE HEATING WILL LIKELY AID SHOWER DEVELOPMENT WITHIN THE
ALREADY EXTREMELY MOIST AND UNSTABLE AIR MASS ANCHORED OVER THE AREA.
REMBER..GROUND CONDITIONS WITHIN THE WATCH AREA ARE NEAR SATURATION. AS
A RESULT..ANY ADDITIONAL RAINFALL WILL RUNOFF QUICKLY..THEREBY PODUCING
MODERATE RISES ON MANY OF THE ALREADY SWOLLEN RIVERS ANDs STREAMS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 2, 2:36 PM CDTFlash Flood WarningEWXMaverick2 hr
Jun 2, 5:41 PM CDTFlash Flood WarningEWXBexar4 hr
Jun 2, 6:21 PM CDTFlash Flood WarningEWXLavaca4 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.