Alert archive / Wyoming / Tornado Warnings in 1992

Tornado Warning 7, NWS Cheyenne, WY

June 29, 1992Goshen County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Jun 29, 1992, 4:25 PM MDT for Goshen County, Wyoming. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
Jun 29, 1992, 4:25 PM MDT (22:25 UTC)
Expired
Jun 29, 1992, 5:00 PM MDT
In force
35 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Goshen County, WY

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 10.4 hours before the alert went out and 251 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 12:00Z on 1992-06-29Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 12:00Z on 1992-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
632 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
122 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 292227 RRA
TORCYS
WYC015-292300-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
425 PM MDT MON JUN 29 1992
 
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  500 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST WYOMING
 
   ...NORTHWESTERN GOSHEN COUNTY
 
THIS WARNING INCLUDES THE CITY OF FORT LARAMIE.
 
AT 423 PM...A TORNADO WAS REPORTED ON THE GROUND 5 MILES WEST OF
OLD FORT LARAMIE...OR 20 MILES EAST OF TORRINGTON. THE
THUNDERSTORM PRODUCING THE TORNADO WAS MOVING TO THE NORTHEAST AT
30 MILES AN HOUR.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
IN ADDITION...A TORNADO WATCH REMAINS IN EFFECT FqOR MUCH OF
EASTERN WYOMING UNTIL 900 PM.
WEILAND

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 29, 1:59 PM MDT, 2 hours 26 minutes before
WYZ001-002-003-004-005-006-007-018-019-050-051-292300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
155 PM MDT MON JUN 29 1992

...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR NORTHWEST AND NORTH
CENTRAL WYOMING UNTIL 800 PM...

THE NATIONAL SEVERE STORMS FORECAST CENTER HAS ISSUED A SEVERE
THUNDERSTORM WATCH FOR MUCH OF NORTHWEST AND NORTH CENTRAL WYOMING
UNTIL 800 PM. THE WATCH INCLUDES THE CITIES OF SHERIDAN...WORLAND...
CODY AND LOVELL AS WELL AS ALL OF YELLOWSTONE NATIONAL PARK. THIS
SEVERE THUNDERSTORM WATCH MEANS THAT WEATHER CONDITIONS ARE FAVORABLE
FOR SEVERE THUNDERSTORMS TO DEVELOP.

A SEVERE THUNDERSTORM IS ONE THAT PRODUCES THREE QUARTER OF AN INCH OR
LARGER DIAMETER HAIL AND WIND GUSTS TO 58 MILES AN HOUR OR MORE.

SHORTLY BEFORE 100 PM...THE JACKSON AIRPORT RECORDED A WIND GUST TO 54
MILES AN HOUR FROM NEARBY THUNDERSTORMS. AT 130 PM THUNDERSTORMS WERE
WIDESPREAD OVER THE NORTHWEST PART OF THE STATE. THESE STORMS WERE
MOVING TO THE NORTHEAST AT 25 MILES AN HOUR.

IN ADDITION...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR NORTHWEST AND
NORTH CENTRAL WYOMING UNTIL 1000 PM THIS EVENING.

PEOPLE IN NORTHWEST AND NORTH CENTRAL WYOMING SHOULD BE ALERT TO THE
POSSIBILITY OF INTENSE THUNDERSTORMS THROUGH THE EVENING HOURS. THE
STORMS MAY PRODUCE HEAVY RAIN...LARGE HAIL...STRONG WIND GUSTS AND
DANGEROUS LIGHTNING. WHEN A STORM APPROACHES MOVE INDOORS OR TO AN
APPROPRIATE SHELTER.
WEILAND
Special weather statement, Jun 29, 2:50 PM MDT, 1 hour 35 minutes before
WYZ051>055-057-058>062-066>073-292300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
250 PM MDT MON JUN 29 1992

...A TORNADO WATCH HAS BEEN ISSUED FOR MUCH OF EASTERN WYOMING UNTIL

Nearby

Tornado Warnings in Wyoming, 1992Every tornado warning in 1992Tornadoes in 1992

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.