Alert archive / Wyoming / Tornado Warnings in 1986

Tornado Warning 2, NWS Cheyenne, WY

June 7, 1986Goshen County, Platte County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Jun 7, 1986, 6:58 PM MDT for Goshen County, Platte County, Wyoming. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
Jun 7, 1986, 6:58 PM MDT (00:58 UTC)
Expired
Jun 7, 1986, 7:45 PM MDT
In force
47 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

Counties Goshen County, WY, Platte County, WY

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

Rapid City, SD (KRAP), launched 00:00Z, 1.0 hours before the alert went out and 261 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, Rapid City, SD at 00:00Z on 1986-06-08Temperature 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, Rapid City, SD at 00:00Z on 1986-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
2019 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
116 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 KCYS 080059
TORCYS
WYC015-031-080145-

BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
658 PM MDT SAT JUN 7 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE
UNTIL 745 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

SOUTHEAST WYOMING..PLATTE AND GOSHEN

AT 655 PM RADAR INDICATED A POSSIBLE TORNADO NEAR THE TOWN OF GUERNSEY
WYOMING..OR ABOUT 80 MILES NORTH OF CHEYENNE.  THE THUNDERSTORM CAUSING
THE POSSIBLE TORNADO WAS MOVING NORTHEAST AT 20 MPH TOWARD NORTHERN
GOSHEN COUNTY.

GOLF BALL SIZE HAIL..HEAVY RAINS AND STRONG WINDS WERE OCCURRING IN
THE TOWN OF GUERNSEY AT 655 PM.

IF YOU ARE IN THE PATH OF THIS STORM..GO TO A BASEMENT SHELTER OR A
CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR.  ABANDON CARS AND MOBILE
HOMES IMMEDIATELY FOR THE SHELTER OF A REINFORCED BUILDING.

HATTEN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 6:15 PM MDTSevere Thunderstorm WarningCYSPlatte45 min
Jun 7, 7:50 PM MDTSevere Thunderstorm WarningCYSGoshen55 min
Jun 7, 8:20 PM MDTTornado WarningCYSGoshen40 min
Jun 8, 2:13 PM MDTSevere Thunderstorm WarningCYSPlatte47 min
Jun 8, 5:08 PM MDTTornado WarningCYSLaramie52 min

Nearby

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