Alert archive / Wyoming / Tornado Warnings in 1993

Tornado Warning 21, NWS Cheyenne, WY

July 16, 1993Goshen County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Jul 16, 1993, 5:29 PM MDT for Goshen County, Wyoming. It was in force for 15 min.

The area

The counties it named.

The facts

Issued: Jul 16, 1993, 5:29 PM MDT (23:29 UTC)
Expired: Jul 16, 1993, 5:44 PM MDT
In force: 15 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, 11.5 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-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: 785 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 666 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 220 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCYS 162331
TORCYS
WYC015-162345-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
529 PM MDT FRI JUL 16 1993
 
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  545 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST WYOMING
 
   ...NORTHEASTERN GOSHEN COUNTY
 
 
AT 525 PM MDT THE PUBLIC REPORTED A TORNADO
ON THE GROUND 33 MILES NORTH OF TORRINGTON
IN GOSHEN COUNTY.
 
NO MOVEMENT ON THE STORM WAS REPORTED
 
THIS WARNING DOES NOT INCLUDE TORRINGTON
OR JAY EM.
 
A SEVERE THUNDERSTORM WATCH IS IN EFFECT
UNTIL 10 PM THIS EVENING.
 
 
DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO.  CARS ARE EASILY
TOSSED AROUND  BY TORNADO WINDS.  IF YOU ARE CAUGHT IN THE PATH OF
A TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING.  IF NO
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.
 
 
SGS
&

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 6:25 PM MDT	Severe Thunderstorm Warning	CYS	Sheridan	50 min

Nearby

Tornado Warnings in Wyoming, 1993 Every tornado warning in 1993 Tornadoes in 1993

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.