Alert archive / Wyoming / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 84, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 30, 1998, 11:17 PM MDT for Laramie County, Wyoming. It was in force for 53 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 30, 1998, 11:17 PM MDT (05:17 UTC)
- Expired
- Jul 1, 1998, 12:10 AM MDT
- In force
- 53 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 05:18 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, 5.3 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
- 442 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 2139 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- -24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
440 WUUS1 KCYS 010519 SVRCYS WYC021-010605- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 1117 PM MDT TUE JUN 30 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN LARAMIE COUNTY IN SOUTHEASTERN WYOMING * UNTIL 1210 AM MDT * AT 1115 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES NORTHEAST OF CHEYNNE... MOVING EAST SOUTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ALBIN BY 1130 PM PINE BLUFFS BY 1145 PM THIS STORM HAS A HISTORY OF DAMAGING WIND. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS WCJIN-WYSE JAD
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 30, 9:24 PM MDT, 1 hour 53 minutes before
WYZ065-066-010400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 924 PM MDT TUE JUN 30 1998 ...A STRONG THUNDERSTORM WAS MOVING THROUGH EAST CENTRAL ALBANY COUNTY AT 920 PM... THE STORM WAS LOCATED ABOUT 15 MILES NORTH OF LARAMIE...OR JUST EAST OF BOSLER. IT WAS MOVING SOUTHEAST AT 25 MPH AND WILL STAY EAST OF HIGHWAY 30 AND MISS LARAMIE. THIS STORM WAS LIKELY PRODUCING HEAVY RAIN AND SMALL HAIL...ALONG WITH GUSTY WINDS TO &50 MPH. PEOPLE IN EAST CENTRAL ALBANY COUNTY SHOULD REMAIN INDOORS UNTIL THIS STORM PASSES ON BY. WCJIN-WYSE JAD
Special weather statement, Jun 30, 9:24 PM MDT, 1 hour 53 minutes before
WYZ065-066-010400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 924 PM MDT TUE JUN 30 1998 ...A STRONG THUNDERSTORM WAS MOVING THROUGH EAST CENTRAL ALBANY COUNTY AT 920 PM... THE STORM WAS LOCATED ABOUT 15 MILES NORTH OF LARAMIE...OR JUST EAST OF BOSLER. IT WAS MOVING SOUTHEAST AT 25 MPH AND WILL STAY EAST OF HIGHWAY 30 AND MISS LARAMIE. THIS STORM WAS LIKELY PRODUCING HEAVY RAIN AND SMALL HAIL...ALONG WITH GUSTY WINDS TO &50 MPH. PEOPLE IN EAST CENTRAL ALBANY COUNTY SHOULD REMAIN INDOORS UNTIL THIS STORM PASSES ON BY. WCJIN-WYSE JAD
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 10:44 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 51 min |
| Jun 30, 11:38 PM MDT | Tornado Warning | CYS | Laramie | 32 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; radar from the NEXRAD Level II archive.