Alert archive / Texas / Flash Flood Warnings in 1986

Flash Flood Warning 2, NWS Houston/Galveston, TX

June 26, 1986Polk County, San Jacinto County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Jun 26, 1986, 3:32 PM CDT for Polk County, San Jacinto County, Texas. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jun 26, 1986, 3:32 PM CDT (20:32 UTC)
Expired
Jun 26, 1986, 7:30 PM CDT
In force
4 hr
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

Counties Polk County, TX, San Jacinto 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.5 hours before the alert went out and 184 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, Lake Charles Mun, LA at 12:00Z on 1986-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 70 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, Lake Charles Mun, LA at 12:00Z on 1986-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -153 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
70 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
758 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-153 m²/s²
0-3 km storm-relative helicity
-95 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 
TTAAOO KHOU 262032
FFWHOU
TXC373-407-270030-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON TX
332 PM CDT THU JUN 26 1986
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL  730 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
 
IN  TEXAS
          ..POLK..SAN JACINTO

A CLUSTER OF VERY HEAVY THUNDERSTORMS FROM SOUTHEAST OF HUNTSVILLE
ACROSS SHEPHERD AND GOODRICH TO CAMP RUBY. ONE FOOT OF WATER WAS
REPORTED ON I59 NEAR SHEPHERD AND TWO FEET AT GOODRICH.  I59 IS
STILL PASSABLE BUT BARELY.  POLK COUNTY SHERIFF ALSO REPORTED FM 1988
WAS CLOSED AT SEVEREAL PLACES.
 
THESE STORMS WERE DRIFTING EAST AND ADDITIONAL RAINFALL OF MORE THAN
TWO INCHES CAN BE EXPECETD FROM THESE STORMS.
 
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
ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM, EVEN A SMALL ONE,
ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES, DIPS, OR LOW SPOTS IF WATER COVERS THE
ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM, EVEN A SMALL ONE,
ON FOOT.
 
BRIEF HEAVY RAINS, STRONG WINDS, FREQUENT DANGEROUS LIGHTNING, AND
POSSIBLE HAIL ARE ALL LIKELY WITH THESE STORMS. WITH GROUNDS ALREADY
SATURATED FROM PREVIOUS lRAINS, ANY ADDITIONAL RAIN WILL CAUSE CREEKS
AND STREAMS TO RAPIDLY OVERFLOW.
 
STAY TUNED TO YOUR NOAA WEATHER RADIO OR LOCAL NEWS MEDIA FOR MORE
INFORMATION ON THIS DANGEROUS FLOOD EVENT.

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 26, 7:42 AM CDTTornado WarningHGXChambers60 min

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.