Alert archive / Wyoming / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 25, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 2, 1997, 2:47 PM MDT for Niobrara County, Wyoming. It was in force for 48 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, 2:47 PM MDT (20:47 UTC)
- Expired
- Jun 2, 1997, 3:35 PM MDT
- In force
- 48 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Niobrara County, WY
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 2, 1:30 PM MDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 8.8 hours before the alert went out and 171 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
979 WUUS1 KCYS 022048 RRA SVRCYS WYC027-022135- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 247 PM MDT MON JUN 2 1997 * SEVERE THUNDERSTORM WARNING FOR SOUTHERN NIOBRARA COUNTY IN EASTERN WYOMING * UNTIL 335 PM MDT * SOME LOCATIONS AFFECTED 5 N OF LUSK BY 258 PM MDT * AT 246 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR 5 MILES NORTHWEST OF LUSK MOVING EAST AT 25 MPH. A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. TAKE SHELTER INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. WCJIN-WYNE DMM
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, 1 hour 12 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
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 2:45 PM MDT | Tornado Warning | CYS | Platte | 20 min |
| Jun 2, 4:00 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 35 min |
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.