Alert archive / Wyoming / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 288, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 3, 2019, 5:55 PM MDT for Goshen County, Laramie County, Platte County, Wyoming. It was in force for 50 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
- Aug 3, 2019, 5:55 PM MDT (23:55 UTC)
- Expired
- Aug 3, 2019, 6:45 PM MDT
- In force
- 50 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Goshen County, WY, Laramie County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 78 km from the middle of the area, began a volume at 23:54 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 12:00Z, 11.9 hours before the alert went out and 251 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
- 2115 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
NWS Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 3, 5:40 PM MDT, 15 minutes earlier.
Area forecast discussion, Aug 3, 5:40 PM MDT, 15 minutes before
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</html>Hazardous weather outlook, Aug 3, 3:57 AM MDT, 13 hours 58 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 357 AM MDT Sat Aug 3 2019 NEZ002-003-095-096-WYZ101-102-107-108-041000- Dawes-Box Butte-North Sioux-South Sioux- Converse County Lower Elevations-Niobrara County- East Platte County-Goshen County- 357 AM MDT Sat Aug 3 2019 This hazardous weather outlook is for portions of western Nebraska...east central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Isolated to scattered showers and thunderstorms possible in a marginal risk of severe thunderstorms having hail and winds main threat. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY General thunderstorm to marginal risk of severe weather possible over the next couple days with hail, winds, and heavy rainfall biggest concerns. .Spotter information statement... Spotters are encouraged to report their precipitation, wind damage, and/or hail to the National Weather Service Office in Cheyenne, Wyoming. NEZ019>021-054-055-WYZ103>106-109>119-041000- Scotts Bluff-Banner-Morrill-Kimball-Cheyenne-North Laramie Range- Ferris/Seminoe/Shirley Mountains-Shirley Basin- Central Laramie Range and Southwest Platte County- Central Carbon County-North Snowy Range Foothills- Southwest Carbon County-Sierra Madre Range- Upper North Platte River Basin-Snowy Range-Laramie Valley- South Laramie Range-South Laramie Range Foothills- Central Laramie County-East Laramie County- 357 AM MDT Sat Aug 3 2019 This hazardous weather outlook is for portions of western Nebraska...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT General, non-severe thunderstorms possible this afternoon into the early evening. Small hail and brief gusty winds be main concern. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY General thunderstorm to marginal risk of severe weather possible over the next couple days with hail, winds, and heavy rainfall biggest concerns. .Spotter information statement... Spotters are encouraged to report their precipitation, wind damage, and/or hail to the National Weather Service Office in Cheyenne, Wyoming.
In the hours before
Special weather statement, Aug 3, 4:30 PM MDT, 1 hour 25 minutes before
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</html>Special weather statement, Aug 3, 4:42 PM MDT, 1 hour 13 minutes before
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</html>Local storm report, Aug 3, 5:05 PM MDT, 50 minutes before
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</html>Special weather statement, Aug 3, 5:33 PM MDT, 22 minutes before
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</html>Local storm report, Aug 3, 5:42 PM MDT, 13 minutes before
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</html>The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 1:56 PM MDT | Special Weather Statement | CYS | Platte | 49 min |
| Aug 3, 2:28 PM MDT | Special Weather Statement | CYS | Niobrara | 47 min |
| Aug 3, 2:30 PM MDT | Special Weather Statement | CYS | Laramie | 45 min |
| Aug 3, 2:58 PM MDT | Special Weather Statement | CYS | Platte | 47 min |
| Aug 3, 3:03 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 42 min |
| Aug 3, 3:25 PM MDT | Special Weather Statement | CYS | Platte | 50 min |
| Aug 3, 3:30 PM MDT | Special Weather Statement | CYS | Niobrara | 45 min |
| Aug 3, 3:42 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 18 min |
| Aug 3, 3:55 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 50 min |
| Aug 3, 3:59 PM MDT | Special Weather Statement | CYS | Goshen | 46 min |
| Aug 3, 4:07 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 23 min |
| Aug 3, 4:30 PM MDT | Special Weather Statement | CYS | Platte | 45 min |
| Aug 3, 4:41 PM MDT | Special Weather Statement | CYS | Niobrara | 49 min |
| Aug 3, 4:42 PM MDT | Special Weather Statement | CYS | Converse | 48 min |
| Aug 3, 4:46 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 29 min |
| Aug 3, 5:10 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie, Platte | 50 min |
| Aug 3, 5:33 PM MDT | Special Weather Statement | CYS | Niobrara | 42 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2019Every severe thunderstorm warning in 2019
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.