Alert archive / Wyoming / Tornado Warnings in 1997

Tornado Warning 3, NWS Riverton, WY

June 10, 1997Sweetwater County, Wyoming

NWS Riverton, WY issued this tornado warning at Jun 10, 1997, 2:53 PM MDT for Sweetwater County, Wyoming. It was in force for 37 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 10, 1997, 2:53 PM MDT (20:53 UTC)
Expired
Jun 10, 1997, 3:30 PM MDT
In force
37 min
Issued by
NWS Riverton, WY
Area
Whole counties

County Sweetwater County, WY

The nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 8.9 hours before the alert went out and 162 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, Riverton, WY at 12:00Z on 1997-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 228 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, Riverton, WY at 12:00Z on 1997-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
228 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
984 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
67 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 KRIW 102052 RRA
TORRIW
WYC037-102140-

BULLETIN - EAS ACTIVATION
TORNADO WARNING
NATIONAL WEATHER SERVICE RIVERTON WY
253 PM MDT TUE JUN 10 1997

* TORNADO WARNING FOR
  WESTERN SWEETWATER COUNTY - SOUTH CENTRAL WYOMING

* UNTIL 330 PM MDT
 
* SOME LOCATIONS AFFECTED

  ROCK SPRINGS
  GREEN RIVER

* AT 245 PM MDT LOCAL LAW ENFORCEMENT REPORTED A TORNADO ON HIGHWAY 530
  SOUTHWEST OF ROCK SPRINGS MOVING NORTHEAST 20 MPH.

* THE STORM WILL BE NEAR ROCK SPRINGS AT 300 PM.

IF YOU ARE NEAR THIS DANGEROUS STORM, TAKE COVER IMMEDIATELY IN THE
LOWEST FLOOR AND INNERMOST ROOM OF A BUILDING.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IN A HOME OR
BUSINESS IS AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE.  AVOID
WINDOWS.

WCJIN-WYSW-
SHEETS
&

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.