Alert archive / Wyoming / Tornado Warnings in 1997

Tornado Warning 5, NWS Cheyenne, WY

June 2, 1997Platte County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Jun 2, 1997, 2:45 PM MDT for Platte County, Wyoming. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 2, 1997, 2:45 PM MDT (20:45 UTC)
Expired
Jun 2, 1997, 3:05 PM MDT
In force
20 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Platte County, WY

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 2, 1:30 PM MDTTornado WatchSPC6 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 8.8 hours before the alert went out and 274 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 1997-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 1997-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 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
2 J/kg
Mixed-layer CIN
-148 J/kg
Mixed-layer LCL
1251 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
-17 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.

967 
WFUS1 KCYS 022046 RRA
TORCYS
WYC031-022105-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
245 PM MDT MON JUN 2 1997

* TORNADO WARNING FOR
  SOUTHERN PLATTE COUNTY IN SOUTHEASTERN WYOMING

* UNTIL 305 PM MDT

* THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS.

* AT 243 PM MDT...A POSSIBLE TORNADO WAS INDICATED BY DOPPLER RADAR
  15 MILES SOUTH OF WHEATLAND OR 7 MILES SOUTH OF I-25 AT BORDEAUX
  ROAD MOVING NORTHEAST AT 30 MPH.
 
 
MOBILE HOMES OFFER NO SHELTER.  LEAVE THEM IMMEDIATELY  SEEK A STURDY
BUILDING...EVEN A DITCH OR RAVINE IS SAFER THAN A MOBILE HOME.

WCJIN-WYSE

JBS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 2, 2:47 PM MDTSevere Thunderstorm WarningCYSNiobrara48 min
Jun 2, 4:00 PM MDTSevere Thunderstorm WarningCYSGoshen35 min

Nearby

Tornado Warnings in Wyoming, 1997Every tornado warning in 1997Tornadoes in 1997

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.