Alert archive / Wyoming / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 28, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 2, 1997, 7:08 PM MDT for Laramie County, Wyoming. It was in force for 47 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, 7:08 PM MDT (01:08 UTC)
- Expired
- Jun 2, 1997, 7:55 PM MDT
- In force
- 47 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 20 km from the middle of the area, began a volume at 01:10 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.1 hours before the alert went out and 202 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- -187 J/kg
- Mixed-layer LCL
- 2299 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
548 WUUS1 KCYS 030109 RRA SVRCYS WYC021-030155- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 708 PM MDT MON JUN 2 1997 * SEVERE THUNDERSTORM WARNING FOR LARAMIE COUNTY IN SOUTHEASTERN WYOMING * UNTIL 755 PM MDT * SOME AFFECTED LOCATIONS INCLUDE ALBIN HILLSDALE CHEYENNE * AT 705 PM RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM ALBIN TO CURT GOWDY STATE PARK AND WAS MOVING EAST AT 20 MPH. A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. GOLF BALL SIZE HAIL WAS REPORTED WITH THIS STORM NEAR ALBIN. LARGE HAIL AND STRONG WINDS WITH THIS STORM MAY CAUSE INJURY OR DAMAGE. TAKE SHELTER INSIDE A STURDY BUILDING AWAY FROM ALL DOORS AND WINDOWS. WCJIN-WYSE JMH
What forecasters said that day
The local office's own words before this severe thunderstorm 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 2, 1:35 PM MDT, 5 hours 33 minutes before
WYZ059-060-061-062-063-064-065-066-067-068-069-070-022030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 135 PM MDT MON JUN 2 1997 ...A TORNADO WATCH HAS BEEN POSTED FOR EASTERN WYOMING... A TORNADO WATCH HAS BEEN POSTED FOR MUCH OF EASTERN WYOMING UNTIL 700PM. THE WATCH INCLUDES SOUTHEAST JOHNSON...SOUTHERN CAMPBELL... WESTON...EASTERN NATRONA...CONVERSE...NIOBRARA...EASTERN CARBON... ALBANY...LARAMIE...PLATTE AND GOSHEN COUNTIES. SOME CITIES INCLUDED IN THE WATCH ARE NEWCASTLE...CASPER...DOUGLAS... LUSK...LARAMIE...CHEYENNE...WHEATLAND AND TORRINGTON. AT 130 PM THUNDERSTORMS WERE DEVELOPING RAPIDLY OVER SOUTHEAST WYOMING. THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER YET OVER SOUTHEAST WYOMING. LARGE HAIL...DAMAGING WINDS AND HEAVY RAINFALL SHOULD BE EXPECTED WITH THE STRONGEST STORMS IN MUCH OF EASTERN WYOMING UNTIL EARLY EVENING. WCJIN-WYNE-WYSE COX
Special weather statement, Jun 2, 5:48 PM MDT, 1 hour 20 minutes before
WYZ059-060-064>070-030045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 548 PM MDT MON JUN 2 1997 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 7 PM FOR MUCH OF EASTERN WYOMING... AT 540 PM...MOST OF THE THUNDERSTORMS WERE CONCENTRATED IN A BAND FROM SOUTHWEST OF LARAMIE NORTHEASTWARD INTO FAR SOUTHERN GOSHEN COUNTY. THE BAND OF STORMS WAS DRIFTING EAST...WHILE INDIVIDUAL STORMS WERE MOVING NORTHEAST AT 20 TO 25 MPH. CONDITIONS CONTINUE TO BE FAVORABLE FOR THE DEVELOPMENT OF STRONG AND POSSIBLY SEVERE THUNDERSTORMS ACROSS MAINLY SOUTHEAST WYOMING THROUGH 7 PM. A BRIEF FUNNEL CLOUD WAS SIGHTED JUST SOUTH OF LARAMIE AROUND 515 PM. IT DISSIPATED QUITE RAPIDLY AFTER FORMING. RESIDENTS OF EASTERN WYOMING SHOULD REMAIN ALERT TO STORMS MOVING INTO YOUR AREA THIS EVENING. BE READY TO MOVE INDOORS TO A SAFE LOCATION IF THREATENING WEATHER APPROACHES. WCJIN-WYSE-WYNE JAD
Special weather statement, Jun 2, 6:54 PM MDT, 14 minutes before
WYZ059-060-062>070-030135- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 654 PM MDT MON JUN 2 1997 ...THE TORNADO WATCH WILL END AT 7 PM FOR MOST OF EASTERN WYOMING EXCEPT IN LARAMIE COUNTY... STORMS WERE CONCENTRATING IN LARAMIE COUNTY IN FAR SOUTHEAST WYOMING AT 650 PM...AND SO THE TORNADO WATCH HAS BEEN EXTENDED UNTIL 9 PM JUST FOR LARAMIE COUNTY. ELSEWHERE ACROSS EAST CENTRAL AND SOUTHEAST WYOMING...THE THREAT OF SEVERE THUNDERSTORMS HAS ENDED...AND SO THE WATCH HAS BEEN CANCELLED. A LINE OF STRONG TO SEVERE THUNDERSTORMS EXTENDED ACROSS WESTERN AND NORTHERN LARAMIE COUNTY AT 650 PM. THE STORMS WERE MOVING EAST OR SOUTHEAST AROUND 20 TO 25 MPH. HEAVY RAIN...HAIL AND POSSIBLY EVEN A TORNADO ARE POSSIBLE IN LARAMIE COUNTY UNTIL 9 PM. ONCE AGAIN...THE TORNADO WATCH IS OVER FOR WYOMING EXCEPT IN THE FAR SOUTHEAST. WCJIN-WYSE-WYNE JAD
Nearby
Severe Thunderstorm Warnings in Wyoming, 1997Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.