Alert archive / Wyoming / Tornado Warnings in 1992

Tornado Warning 2, NWS Cheyenne, WY

May 15, 1992Sweetwater County, Wyoming

NWS Cheyenne, WY issued this tornado warning at May 15, 1992, 10:17 PM MDT for Sweetwater County, Wyoming. It was in force for 13 min.

The area

The counties it named.

The facts

Issued
May 15, 1992, 10:17 PM MDT (04:17 UTC)
Expired
May 15, 1992, 10:30 PM MDT
In force
13 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Sweetwater County, WY

The nearest sounding before it

Lander/Hunt Fiel, WY (KLND), launched 00:00Z, 4.3 hours before the alert went out and 130 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 00:00Z on 1992-05-16Temperature 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 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 00:00Z on 1992-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -68 square meters per square second.193958Sfc1 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
1376 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-68 m²/s²
0-3 km storm-relative helicity
-56 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 160421
TORCYS
WYC037-160430-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
1017 PM MDT FRI MAY 15 1992
 
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1030 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST WYOMING
 
   ...NORTH CENTRAL SWEETWATER COUNTY NOT INCLUDING
ROCK SPRINGS OR FARSON.
 
 
AT 10 PM MDT A RESIDENT OF FARSON REPORTED A TORNADO ON
THE GROUND 20 MILES EAST OF THE TOWN OF FARSON. THIS IS
30 MILES NORTH OF ROCK SPRINGS IN SWEETWATER COUNTY.
 
THE TORNADO WAS REPORTED TO BE MOVING TO THE SOUTHWEST.
WEATHER RADAR INDICATED THE STORMS TO BE MOVING TO THE
NORTHEAST AT 20 TO 25 MILES AN HOUR.
 
 
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.
SGS

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 6:07 PM MDTTornado WarningCYSWashakie38 min

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.