A Winter Storm Warning has been posted for the Sierra Madre and Snowy Range Mountains of southeast Wyoming, according to the Cheyenne Office of the National Weather Service.

The agency posted this statement on its website:

Winter Storm Warnings are in effect for the Snowy and Sierra Madre Mountains from Friday morning through Monday afternoon. There are two main rounds of snowfall we are looking at: 1) Friday afternoon through Saturday and 2) Early Monday through Monday afternoon. Snow is forecast to become more widespread Sunday and Monday, resulting in accumulating snowfall outside of the highlighted areas. More details to come as we get closer to Sunday and Monday.

The agency included the following in a Thursday email:

Good evening,The weather Impact Level for Friday into early Tuesday for elevated to high winds and prolonged mountain snow will be Moderate. Additionally, snow impacts across Southeast Wyoming and Nebraska Panhandle High Plains late Sunday into Monday plus blowing snow Tuesday will be Low to Moderate.

 

Key Messages:

  • Active period ahead from Friday through next Tuesday with prolonged mountain snow, elevated to high winds, and High Plains snow late Sunday into next Monday Night.

 

  • Upwards of 2-3 feet of snow forecast for Sierra Madre Mountain Range and 1-2 feet for Snowys mid-day Friday to Tuesday morning. Caution advised for recreationists/snowmobilers. Local mountain avalanche hazards could be possible next week.

 

  • Winds will be elevated to high for Arlington/Elk Mountain along I-80 and the I-80 Summit to Bordeaux on I-25 tonight through Saturday. Localized blowing snow could reduce visibility.

 

  • Light to moderate snow will spread to lower elevations of Southeast WY and Nebraska Panhandle late Sunday through Monday Evening. Winter Weather Advisories could be possible for several areas. Winds increase Tuesday and blowing snow/reduced visibilities could be possible - causing lingering impacts.

Recent Updates:
  • High Wind Warnings/Watches for wind prone locations and Winter Storm Warnings for Sierra Madre and Snowy Mountains now in place.

Here is the weather forecast for Cheyenne:

Today
Mostly sunny, with a high near 41. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, with a steady temperature around 32. West wind around 15 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, with a high near 49. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
A slight chance of rain and snow before 10pm, then a chance of snow. Mostly cloudy, with a low around 28. West southwest wind around 10 mph. Chance of precipitation is 30%.
New Year's Day
A 40 percent chance of snow. Mostly cloudy, with a high near 34. South wind 10 to 15 mph becoming east southeast in the afternoon.
Sunday Night
Snow. Low around 20. Chance of precipitation is 80%.
Monday
Snow. High near 25. Blustery. Chance of precipitation is 90%.
Monday Night
A chance of snow before midnight. Mostly cloudy, with a low around 14.
Tuesday
Mostly sunny, with a high near 27.
Tuesday Night
Partly cloudy, with a low around 8.
Wednesday
Sunny, with a high near 28. Breezy.
Wednesday Night
Mostly clear, with a low around 10.
Thursday
Mostly sunny, with a high near 35. Breezy.

Here is the forecast for Laramie:

Today
Mostly sunny, with a high near 36. Windy, with a west southwest wind around 30 mph, with gusts as high as 45 mph.
Tonight
A 30 percent chance of snow, mainly after 11pm. Partly cloudy, with a temperature rising to around 34 by 3am. Windy, with a west wind around 30 mph, with gusts as high as 45 mph.
Saturday
A chance of snow before 1pm, then a chance of rain and snow. Mostly sunny, with a high near 45. Windy, with a west wind 25 to 35 mph, with gusts as high as 50 mph. Chance of precipitation is 30%.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 29. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
New Year's Day
Snow likely. Mostly cloudy, with a high near 34. South wind 10 to 15 mph becoming east in the afternoon. Chance of precipitation is 70%.
Sunday Night
Snow. Low around 21. Chance of precipitation is 90%.
Monday
Snow. High near 23. Chance of precipitation is 90%.
Monday Night
A chance of snow before 11pm. Mostly cloudy, with a low around 14.
Tuesday
Mostly sunny, with a high near 23. Blustery.
Tuesday Night
Partly cloudy, with a low around 9. Breezy.
Wednesday
Sunny, with a high near 25. Breezy.
Wednesday Night
Partly cloudy, with a low around 13. Breezy.
Thursday
Mostly sunny, with a high near 35. Breezy.

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