Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 75, NWS Midland/Odessa, TX

September 30, 1986Terrell County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Sep 30, 1986, 7:08 PM CDT for Terrell County, Texas. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Sep 30, 1986, 7:08 PM CDT (00:08 UTC)
Expired
Sep 30, 1986, 8:15 PM CDT
In force
67 min
Issued by
NWS Midland/Odessa, TX
Area
Whole counties

County Terrell 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, 0.1 hours before the alert went out and 153 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 1986-10-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3899 joules per kilogram.LCLEL10008507005003002001001 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 1986-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 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
3899 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1139 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
1.1
Supercell composite
7.6

Open this sounding in Storm Lab

The text

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

000 
TTAAOO KMAF 010008
SVRMAF
TXC443-310115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIDLAND TX
708 PM CDT TUE SEP 30 1986
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  815 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
 
IN SOUTHWEST TEXAS
          ..NORTHWESTERN TERRELL

AT 710 PM CDT MIDLAND RADAR INDICATED A SEVERE THUNDERSTORM 30 MILES
SOUTHWEST OF SHEFFIELD MOVING EAST AT 30 MILES AN HOUR.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH, LARGE HAIL, AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER,
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 30, 11:00 PM CDTSevere Thunderstorm WarningMAFEctor, Midland60 min
Oct 1, 5:07 PM CDTSevere Thunderstorm WarningMAFCrane53 min
Oct 1, 5:41 PM CDTSevere Thunderstorm WarningMAFPecos64 min
Oct 1, 5:58 PM CDTTornado WarningMAFCrane62 min
Oct 1, 6:42 PM CDTSevere Thunderstorm WarningMAFPecos63 min

Nearby

Severe Thunderstorm Warnings in Texas, 1986Every severe thunderstorm 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.