Alert archive / Arkansas / Tornado Warnings in 1986

Tornado Warning 2, NWS Tulsa, OK

April 7, 1986Benton County, Arkansas

NWS Tulsa, OK issued this tornado warning at Apr 7, 1986, 10:02 PM CST for Benton County, Arkansas. It was in force for 58 min. 3 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 7, 1986, 10:02 PM CST (04:02 UTC)
Expired: Apr 7, 1986, 11:00 PM CST
In force: 58 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Benton 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

Time	Report	Where
Apr 7, 10:08 PM CST	Hail 1.75	Benton, AR
Apr 7, 10:23 PM CST	Hail 0.75	Benton, AR
Apr 7, 10:25 PM CST	Hail 1	Benton, 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 00:00Z, 4.0 hours before the alert went out and 74 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1744 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1228 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 10.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSM 080402
TORFSM
ARC007-080500-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
1002 PM CST MON APR 7 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 1100 PM CST FOR PEOPLE IN THE FOLLOWING COUNTY OF

ARKANSAS...BENTON

AT 1000PM A TORNADO WAS INDICATED BY RADAR ON THE MISSOURI
BORDER NORTH OF PEA RIDGE ARKANSAS MOVING TOWARD THE SOUTHEAST
A,T 35 MPH.

THIS IS A LARGE AND DANGEROUS STORM AND RESIDENTS SHOULD TAKE
SHELTER IMMEDIATELY.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL RADIO OR TELEVISION
STATIONS FOR MORE INFORMATION.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 6:46 PM CST	Severe Thunderstorm Warning	TSA	Benton, Washington	59 min
Apr 7, 7:49 PM CST	Severe Thunderstorm Warning	TSA	Benton, Washington	56 min
Apr 7, 8:45 PM CST	Severe Thunderstorm Warning	TSA	Benton, Madison	60 min
Apr 7, 9:46 PM CST	Severe Thunderstorm Warning	TSA	Benton, Madison	59 min
Apr 7, 10:16 PM CST	Tornado Warning	TSA	Madison, Washington	59 min
Apr 7, 11:16 PM CST	Severe Thunderstorm Warning	TSA	Franklin, Madison	44 min
Apr 7, 11:32 PM CST	Flash Flood Warning	TSA	Benton, Madison	3 hr
Apr 7, 11:35 PM CST	Severe Thunderstorm Warning	TSA	Benton	55 min
Apr 8, 12:44 AM CST	Severe Thunderstorm Warning	TSA	Washington	61 min
Apr 8, 1:01 AM CST	Severe Thunderstorm Warning	TSA	Johnson	59 min
Apr 8, 1:14 AM CST	Severe Thunderstorm Warning	TSA	Franklin, Logan	61 min
Apr 8, 1:14 AM CST	Severe Thunderstorm Warning	TSA	Crawford	61 min

Nearby

Tornado Warnings in Arkansas, 1986 Every tornado warning in 1986 Tornadoes 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.