Alert archive / Arkansas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 16, NWS Tulsa, OK

April 4, 1986Benton County, Washington County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 4, 1986, 11:21 AM CST for Benton County, Washington County, Arkansas. It was in force for 69 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 4, 1986, 11:21 AM CST (17:21 UTC)
Expired
Apr 4, 1986, 12:30 PM CST
In force
69 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties Benton County, AR, Washington County, AR

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Apr 4, 11:25 AM CSTHail 0.75Washington, AR
Apr 4, 11:55 AM CSTHail 0.75Benton, AR

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Springfield, MO (KUMN), launched 12:00Z, 5.4 hours before the alert went out and 91 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, Springfield, MO at 12:00Z on 1986-04-04Temperature 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, Springfield, MO at 12:00Z on 1986-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 square meters per square second.1939587897Sfc1 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
1334 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
138 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 KFSM 041721
SVRFSM
ARC007-143-041830-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
1121 AM CST FRI APR 4 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1230 PM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

ARKANSAS...BENTON AND WASHINGTON

AT 1120AM A SEVERE THUNDERSTORM WAS INDICATED BY RADAR NEAR
PRAIRIE GROVE..MOVING TOWARD THE NORTHEAST AT 35 MPH.

LARGE HAIL AND STRONG SURFACE WINDS MAY OCCUR WITH THIS STORM. IF
YOU OBSERVE ANY LARGE HAIL OR STRONG WINDS PLEASE RELAY YOUR
REPORT TO THE NEAREST LAW ENFORCEMENT AGENCY.

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 3, 10:23 PM CSTSevere Thunderstorm WarningTSACrawford, Sebastian67 min
Apr 4, 4:59 PM CSTSevere Thunderstorm WarningTSAScott61 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.