Alert archive / Nebraska / Tornado Warnings in 1997
Tornado Warning 15, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jun 20, 1997, 2:47 PM MDT for Banner County, Nebraska; Laramie 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 20, 1997, 2:47 PM MDT (20:47 UTC)
- Expired
- Jun 20, 1997, 3:35 PM MDT
- In force
- 48 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
Counties Banner County, NE, Laramie County, WY
The radar
The Cheyenne radar (KCYS), 59 km from the middle of the area, began a volume at 20:49 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 20, 2:30 PM MDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 8.8 hours before the alert went out and 191 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3898 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCYS 202049 RRA TORCYS NEC007-WYC021-202135- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 247 PM MDT FRI JUN 20 1997 * TORNADO WARNING FOR NORTHEASTERN LARAMIE COUNTY IN SOUTHEASTERN WYOMING SOUTHERN BANNER COUNTY IN WESTERN NEBRASKA PANHANDLE * UNTIL 335 PM MDT * THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS. * AT 246 PM MDT...A POSSIBLE TORNADO WAS INDICATED BY DOPPLER RADAR 25 MILES NORTHWEST OF KIMBALL OR IN THE VICINITY OF ALBIN MOVING EAST AT 35 MPH. NEVER TRY TO OUTRUN A TORNADO IN YOUR VEHICLE! STOP...GET OUT...AND SEEK SHELTER IN A BASEMENT OR LIE FLAT IN A DITCH AND COVER YOUR HEAD. WCJIN-WYSE LRE
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 2:32 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 48 min |
| Jun 20, 3:18 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 47 min |
| Jun 20, 3:27 PM MDT | Tornado Warning | CYS | Kimball | 33 min |
| Jun 20, 3:33 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 32 min |
| Jun 20, 3:39 PM MDT | Tornado Warning | CYS | Box Butte | 31 min |
| Jun 20, 4:02 PM MDT | Tornado Warning | CYS | Cheyenne, Kimball | 48 min |
| Jun 20, 4:08 PM MDT | Tornado Warning | CYS | Box Butte | 17 min |
| Jun 20, 4:13 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 47 min |
| Jun 20, 4:42 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 33 min |
| Jun 20, 4:45 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 45 min |
| Jun 20, 5:20 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 45 min |
| Jun 20, 5:27 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne, Kimball | 43 min |
| Jun 20, 3:46 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 34 min |
Nearby
Tornado Warnings in Nebraska, 1997Tornado 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; radar from the NEXRAD Level II archive.