Alert archive / Wyoming / Snow Squall Warnings in 2020
Snow Squall Warning 5, NWS Cheyenne, WY
NWS Cheyenne, WY issued this snow squall warning at Jan 17, 2020, 9:25 AM MST for Albany County, Carbon County, Wyoming. It was in force for 65 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
- Jan 17, 2020, 9:25 AM MST (16:25 UTC)
- Expired
- Jan 17, 2020, 10:30 AM MST
- In force
- 65 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
Counties Albany County, WY, Carbon County, WY
The radar
The Cheyenne radar (KCYS), 140 km from the middle of the area, began a volume at 16:30 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, 4.4 hours before the alert went out and 329 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
- 2327 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this snow squall 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 snow squall warning went out at Jan 17, 4:38 AM MST, 4 hours 47 minutes earlier.
Area forecast discussion, Jan 17, 4:38 AM MST, 4 hours 47 minutes before
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</html>Hazardous weather outlook, Jan 17, 4:47 AM MST, 4 hours 38 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 447 AM MST Fri Jan 17 2020 NEZ019-020-054-055-WYZ104>110-113-115>119-181100- Scotts Bluff-Banner-Kimball-Cheyenne- Ferris/Seminoe/Shirley Mountains-Shirley Basin- Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-Central Carbon County- North Snowy Range Foothills-Upper North Platte River Basin- Laramie Valley-South Laramie Range-South Laramie Range Foothills- Central Laramie County-East Laramie County- 447 AM MST Fri Jan 17 2020 This hazardous weather outlook is for portions of western Nebraska...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT A cold front will sweep across the area this afternoon with westerly winds expected become strong behind it. Wind gusts over 50 mph are expected over most of the area by late this afternoon and continuing tonight with some gusts over 65 mph particularly in wind-prone areas of southeast Wyoming. High Wind Warnings are in effect due to these expected winds. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY Gusty winds will continue saturday, strongest in the morning. After then the probability for widespread hazardous weather is expected to be low. .Spotter information statement... Spotter activation will not be needed. WYZ112-114-181100- Sierra Madre Range-Snowy Range- 447 AM MST Fri Jan 17 2020 This hazardous weather outlook is for portions of south central Wyoming. .DAY ONE...TODAY AND TONIGHT Snow is expected to fall over the area mainly today into this evening with snowfall of 5 to 8 inches expected. Strong westerly winds may create areas of blowing and drifting snow. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY The probability for widespread hazardous weather is low. .Spotter information statement... Spotter activation will not be needed. NEZ002-003-021-095-096-WYZ101>103-111-181100- Dawes-Box Butte-Morrill-North Sioux-South Sioux- Converse County Lower Elevations-Niobrara County- North Laramie Range-Southwest Carbon County- 447 AM MST Fri Jan 17 2020 This hazardous weather outlook is for portions of western Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT A cold front will sweep across the area this afternoon with westerly winds expected become strong behind it. Wind gusts over 50 mph are expected over most of the area by late this afternoon and continuing tonight. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY Gusty winds will persist on Saturday but should ease somewhat during the day. .Spotter information statement... Spotter activation will not be needed.
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 9:59 AM MST | Snow Squall Warning | CYS | Albany | 39 min |
| Jan 17, 11:06 AM MST | Snow Squall Warning | CYS | Laramie, Platte | 39 min |
Nearby
Snow Squall Warnings in Wyoming, 2020Every snow squall warning in 2020
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.