Alert archive / Wyoming / Snow Squall Warnings in 2020
Snow Squall Warning 18, NWS Cheyenne, WY
NWS Cheyenne, WY issued this snow squall warning at Feb 24, 2020, 10:27 AM MST for Albany County, Laramie County, Wyoming. It was in force for 63 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
- Feb 24, 2020, 10:27 AM MST (17:27 UTC)
- Expired
- Feb 24, 2020, 11:30 AM MST
- In force
- 63 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
Counties Albany County, WY, Laramie County, WY
The radar
The Cheyenne radar (KCYS), 50 km from the middle of the area, began a volume at 17:30 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, 5.5 hours before the alert went out and 245 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
- 2265 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 117 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 Feb 24, 10:12 AM MST, 15 minutes earlier.
Area forecast discussion, Feb 24, 10:12 AM MST, 15 minutes before
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</html>Hazardous weather outlook, Feb 24, 5:04 AM MST, 5 hours 23 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 504 AM MST Mon Feb 24 2020 WYZ106-107-110-116>118-251215- Central Laramie Range and Southwest Platte County- East Platte County-North Snowy Range Foothills- South Laramie Range-South Laramie Range Foothills- Central Laramie County- 504 AM MST Mon Feb 24 2020 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT A High Wind Warning is in effect through 5 PM. West winds of 35 to 45 mph with gusts 60 to 70 mph are likely. See Warning text for further details. Snow showers will combine with winds today for blowing snow and reduced visibility at times. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY Tuesday will be quite windy and cold with scattered to numerous snow showers. Blowing snow and reduced visibilities will create hazardous travel conditions at times. .Spotter information statement... Spotter activation will not be needed. NEZ003-019>021-054-055-096-WYZ104-105-108-109-111-113-115-119- 251215- Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne- South Sioux-Ferris/Seminoe/Shirley Mountains-Shirley Basin- Goshen County-Central Carbon County-Southwest Carbon County- Upper North Platte River Basin-Laramie Valley-East Laramie County- 504 AM MST Mon Feb 24 2020 This hazardous weather outlook is for portions of western Nebraska...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TUESDAY Today and Tuesday will be quite windy with gusts to 50 mph at times and cold with scattered to numerous snow showers. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH SUNDAY No hazardous weather conditions expected. .Spotter information statement... Spotter activation will not be needed. NEZ002-095-WYZ101>103-112-114-251215- Dawes-North Sioux-Converse County Lower Elevations- Niobrara County-North Laramie Range-Sierra Madre Range- Snowy Range- 504 AM MST Mon Feb 24 2020 This hazardous weather outlook is for portions of western Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TUESDAY A Winter Weather Advisory has been issued as strong winds combine with scattered to numerous snow showers to produce blowing snow and areas of reduced visibilities. Travel will become difficult and outdoor recreation could be life threatening to those not prepared for severe winter conditions. Additionally, wind chill temperatures will drop to 20 below zero in the Sierra Madre and Snowy Mountains leading to frostbite and hypothermia. Please see text for further details. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH SUNDAY No hazardous weather conditions expected. .Spotter information statement... Please call in or chat us on social media with snow measurements as accumulation occurs.
In the hours before
Local storm report, Feb 24, 8:31 AM MST, 1 hour 56 minutes before
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</html>Local storm report, Feb 24, 8:32 AM MST, 1 hour 55 minutes before
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</html>Local storm report, Feb 24, 9:24 AM MST, 1 hour 3 minutes before
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</html>Local storm report, Feb 24, 9:25 AM MST, 1 hour 2 minutes before
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</html>Local storm report, Feb 24, 10:16 AM MST, 11 minutes before
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</html>Local storm report, Feb 24, 10:17 AM MST, 10 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 |
|---|---|---|---|---|
| Feb 24, 8:11 AM MST | Blizzard Warning | CYS | Albany, Carbon | 3 hr |
| Feb 24, 10:03 AM MST | Snow Squall Warning | CYS | Albany, Laramie | 27 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.