Alert archive / Wyoming / Tornado Warnings in 1989

Tornado Warning 4, NWS Cheyenne, WY

June 8, 1989Johnson County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Jun 8, 1989, 2:09 PM MDT for Johnson County, Wyoming. It was in force for 51 min. 1 report 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, 1989, 2:09 PM MDT (20:09 UTC)
Expired
Jun 8, 1989, 3:00 PM MDT
In force
51 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Johnson 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

TimeReportWhereRemark
Jun 8, 3:05 PM MDTTornado F0Johnson, 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

Lander/Hunt Fiel, WY (KLND), launched 12:00Z, 8.2 hours before the alert went out and 218 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, Lander/Hunt Fiel, WY at 12:00Z on 1989-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 88 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lander/Hunt Fiel, WY at 12:00Z on 1989-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.1939Sfc1 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
88 J/kg
Mixed-layer CIN
-116 J/kg
Mixed-layer LCL
831 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
20 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 KSHR 082012
TORSHR
WYC019-082100-

BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHERIDAN WY
209 PM MDT THU JUN 8 1989

THE NATIONAL WEATHER SERVICE IN SHERIDAN HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  300 PM MDT
FOR PEOPLE IN THE FOLLOWING COUNTY...

IN NORTH CENTRAL WYOMING
          ...CENTRAL JOHNSON

AT 205 PM PUBLIC REPORTED A TORNADO ABOUT 25 MILES SOUTHEAST OF
BUFFALO IN CENTRAL JOHNSON COUNTY. THE TORNADO IS BELIEVED TO BE
MOVING EAST OR NORTHEAST.


IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

DEOLA

Nearby

Tornado Warnings in Wyoming, 1989Every tornado warning in 1989Tornadoes in 1989

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.