Alert archive / Wyoming / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 3, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 24, 1997, 2:36 PM MDT for Converse County, Niobrara County, Platte County, Wyoming. It was in force for 34 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
- May 24, 1997, 2:36 PM MDT (20:36 UTC)
- Expired
- May 24, 1997, 3:10 PM MDT
- In force
- 34 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
Counties Converse County, WY, Niobrara County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 175 km from the middle of the area, began a volume at 20:39 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
Rapid City, SD (KUNR), launched 12:00Z, 8.6 hours before the alert went out and 227 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
- 534 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
096 WUUS1 KCYS 242037 RRA SVRCYS WYC027-031-242110- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 236 PM MDT SAT MAY 24 1997 * SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHWESTERN NIOBRARA COUNTY IN EASTERN WYOMING EXTREME NORTHERN PLATTE COUNTY IN SOUTHEASTERN WYOMING * UNTIL 310 PM MDT * SOME AFFECTED LOCATIONS INCLUDE NORTH SHORE OF GLENDO RESEVOIR SHAWNEE * AT 235 PM RADAR INDICATED A SEVERE THUNDERSTORM OVER THE NORTH SHORE OF GLENDO RESEVOIR MOVING NORTH AT 20 MPH. LARGE HAIL IS LIKELY WITH THIS STORM. SEEK SHELTER INSIDE A STURDY BUILDING AWAY FROM ALL WINDOWS UNTIL THE STORM PASSES WYCJIN-WYSE
1 follow-up statement
115 WUUS1 KCYS 242042 RRB SVRCYS WYC009-027-031-242110- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED NATIONAL WEATHER SERVICE CHEYENNE WY 236 PM MDT SAT MAY 24 1997 * SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHWESTERN NIOBRARA COUNTY IN EASTERN WYOMING EXTREME NORTHERN PLATTE COUNTY IN SOUTHEASTERN WYOMING EXTREME SOUTHEASTERN CONVERSE COUNTY IN SOUTHEASTERN WYOMING * UNTIL 310 PM MDT * SOME AFFECTED LOCATIONS INCLUDE NORTH SHORE OF GLENDO RESEVOIR SHAWNEE * AT 235 PM RADAR INDICATED A SEVERE THUNDERSTORM OVER THE NORTH SHORE OF GLENDO RESEVOIR MOVING NORTH AT 20 MPH. LARGE HAIL IS LIKELY WITH THIS STORM. SEEK SHELTER INSIDE A STURDY BUILDING AWAY FROM ALL WINDOWS UNTIL THE STORM PASSES WYCJIN-WYSE-WYNE
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, May 24, 9:56 AM MDT, 4 hours 40 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-250000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1000 AM MDT SAT MAY 24 1997 SEVERE WEATHER POTENTIAL IN THE CHEYENNE NWS COUNTY WARNING AREA IS LOW TODAY. SPOTTER ACTIVATION WILL NOT BE REQUIRED. DISCUSSION...A MOIST AND UNSTABLE AIRMASS WILL BE OVER SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE AHEAD OF AN APPROACHING LOW PRESSURE SYSTEM. SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON INTO THE EVENING AND SOME STRONG STORMS ARE LIKELY WITH ONLY ISOLATED SEVERE STORMS POSSIBLE. WCJIN-WYSE-WYNE JMH
Special weather statement, May 24, 10:00 AM MDT, 4 hours 36 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-250000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1000 AM MDT SAT MAY 24 1997 SEVERE WEATHER POTENTIAL IN THE CHEYENNE NWS COUNTY WARNING AREA IS LOW TODAY. SPOTTER ACTIVATION WILL NOT BE REQUIRED. DISCUSSION...A MOIST AND UNSTABLE AIRMASS WILL BE OVER SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE AHEAD OF AN APPROACHING LOW PRESSURE SYSTEM. SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON INTO THE EVENING AND SOME STRONG STORMS ARE LIKELY WITH ONLY ISOLATED SEVERE STORMS POSSIBLE. WCJIN-WYSE-WYNE JMH
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 1:31 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 34 min |
| May 24, 3:27 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 33 min |
| May 24, 3:31 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 34 min |
| May 24, 4:03 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 32 min |
| May 24, 4:06 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 34 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; radar from the NEXRAD Level II archive.