Alert archive / Wyoming / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 92, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 2, 1998, 3:53 PM MDT for Albany 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
- Jul 2, 1998, 3:53 PM MDT (21:53 UTC)
- Expired
- Jul 2, 1998, 4:40 PM MDT
- In force
- 47 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Albany County, WY
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 9.9 hours before the alert went out and 270 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
- 212 J/kg
- Mixed-layer CIN
- -304 J/kg
- Mixed-layer LCL
- 1511 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 161 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
620 WUUS1 KCYS 022152 RRA SVRCYS WYC001-022240- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 353 PM MDT THU JUL 2 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN ALBANY COUNTY IN SOUTHEASTERN WYOMING * UNTIL 440 PM MDT * AT 349 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 60 MILES NORTH OF LARAMIE...OR 8 MILES SOUTHWEST OF GARRET...WITH LITTLE OR NO MOVEMENT. THE STORM WILL REMAIN OVER OPEN COUNTRY. DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS WCJIN-WYSE JMR
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, Jul 2, 10:05 AM MDT, 5 hours 48 minutes before
WYZ061>070-NEZ001>003-019>021-054-055-030000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1005 AM MDT THU JUL 2 1998 THE SEVERE WEATHER POTENTIAL IN THE WESTERN NEBRASKA PANHANDLE AND IN SOUTHEAST WYOMING EAST OF THE LARAMIE RANGE IS MODERATE TODAY. WEST OF THE LARAMIE RANGE...THE SEVERE WEATHER POTENTIAL IS LOW TODAY. SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING...MAINLY ALONG AND EAST OF A CHEYENNE TO DOUGLAS LINE. DISCUSSION...A MOIST AND UNSTABLE AIR MASS WILL BE OVER THE OUTLOOK AREA TODAY. DAYTIME HEATING WILL CAUSE WIDELY SCATTERED THUNDERSTORMS TO DEVELOP THIS AFTERNOON...AND A FEW OF THESE MAY BECOME SEVERE WITH HAIL...STRONG WINDS AND HEAVY RAIN. WCJIN-WYSE-WYNE JLH
Special weather statement, Jul 2, 10:05 AM MDT, 5 hours 48 minutes before
WYZ061>070-NEZ001>003-019>021-054-055-030000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1005 AM MDT THU JUL 2 1998 THE SEVERE WEATHER POTENTIAL IN THE WESTERN NEBRASKA PANHANDLE AND IN SOUTHEAST WYOMING EAST OF THE LARAMIE RANGE IS MODERATE TODAY. WEST OF THE LARAMIE RANGE...THE SEVERE WEATHER POTENTIAL IS LOW TODAY. SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING...MAINLY ALONG AND EAST OF A CHEYENNE TO DOUGLAS LINE. DISCUSSION...A MOIST AND UNSTABLE AIR MASS WILL BE OVER THE OUTLOOK AREA TODAY. DAYTIME HEATING WILL CAUSE WIDELY SCATTERED THUNDERSTORMS TO DEVELOP THIS AFTERNOON...AND A FEW OF THESE MAY BECOME SEVERE WITH HAIL...STRONG WINDS AND HEAVY RAIN. WCJIN-WYSE-WYNE JLH
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 7:10 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 60 min |
| Jul 1, 7:59 PM MDT | Tornado Warning | CYS | Converse | 31 min |
| Jul 1, 8:30 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 60 min |
| Jul 1, 9:22 PM MDT | Flash Flood Warning | CYS | Converse | 6 hr |
| Jul 1, 9:33 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 47 min |
| Jul 1, 10:01 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 44 min |
| Jul 2, 3:47 PM MDT | Tornado Warning | CYS | Albany | 28 min |
| Jul 2, 4:35 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 45 min |
| Jul 2, 4:54 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 41 min |
| Jul 2, 5:31 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 49 min |
| Jul 2, 5:51 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 49 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1998Every severe thunderstorm warning in 1998
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.