Alert archive / Wyoming / Tornado Warnings in 1986

Tornado Warning 7, NWS Cheyenne, WY

June 8, 1986Goshen County, Laramie County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Jun 8, 1986, 6:00 PM MDT for Goshen County, Laramie County, Wyoming. It was in force for 60 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: Jun 8, 1986, 6:00 PM MDT (00:00 UTC)
Expired: Jun 8, 1986, 7:00 PM MDT
In force: 60 min
Issued by: NWS Cheyenne, WY
Area: Whole counties

Counties Goshen County, WY, Laramie County, WY

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
Jun 8, 6:15 PM MDT	Hail 1.75	Laramie, WY
Jun 8, 6:50 PM MDT	Tornado F0	Laramie, WY
Jun 8, 7:05 PM MDT	Hail 1.75	Goshen, WY

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

Denver, CO (KDEN), launched 00:00Z, 0.0 hours before the alert went out and 230 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: 460 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 2041 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCYS 090006 COR
TORCYS
WYC015-021-090100-

BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING . . . . . . . . . . . CORRECTION
NATIONAL WEATHER SERVICE CHEYENNE WY
600 PM MDT SUN JUN 8 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE
UNTIL 700 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

SOUTHEAST WYOMING..EASTERN LARAMIE AND SOUTHERN GOSHEN.

AT 550 PM AIR FORCE PERSONNEL SIGHTED A TORNADO IN THE VICINITY OF
ALBIN IN EASTERN LARAMIE COUNTY ABOUT 40 MILES NORTHEAST OF CHEYENNE.
THE TORNADO WAS MOVING NORTH NORTHEAST AT ABOUT 15 TO 20 MILES AN HOUR.

PEOPLE IN THE PATH OF THIS TORNADO SHOULD TAKE COVER IMMEDIATELY.
GO TO A BASEMENT OR A CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR.
ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING.

IN ADDITION...LARGE HAIL HAS BEEN REPORTED WITH THIS STORM.  GOLFBALL
TO SOFTBALL SIZED HAIL FELL JUST WEST OF CARPENTER AROUND 540 PM.

...CORRECTION TO CHANGE TIME OF SIGHTING TO  550 PM...

DASELER

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 8, 6:33 PM MDT	Tornado Warning	CYS	Goshen, Platte	47 min

Nearby

Tornado Warnings in Wyoming, 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.