Alert archive / Arkansas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 21, NWS Memphis, TN

April 7, 1986Clay County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Apr 7, 1986, 3:53 AM CST for Clay County, Arkansas. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Apr 7, 1986, 3:53 AM CST (09:53 UTC)
Expired
Apr 7, 1986, 5:00 AM CST
In force
67 min
Issued by
NWS Memphis, TN
Area
Whole counties

County Clay County, AR

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

Little Rock, AR (KLZK), launched 00:00Z, 9.9 hours before the alert went out and 176 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, Little Rock, AR at 00:00Z on 1986-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Little Rock, AR at 00:00Z on 1986-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3567 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
74 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 KMEM 070953
SVRMEM
ARC021-071100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
353 AM CST MON APR 7 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 500 AM CST FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

ARKANSAS...CLAY

AT 340 AM CST, RADAR INDICATED A SEVERE THUNDERSTORM IN
NORTHWEST CLAY COUNTY IN ARKANSAS. THE THUNDERSTORM WAS MOVING
SOUTHEAST AT 50 MPH.

 THIS THUNDERSTORM WILL LIKELY PRODUCE LARGE HAIL AND WINDS IN EXCESS
  OF 60 MILES AN HOUR.

 REMEMBER - SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A
  TORNADO WITH LITTLE OR NO ADVANCE WARNING.

Nearby

Severe Thunderstorm Warnings in Arkansas, 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.