Western Wyoming PM Forecast

Issued on Sat November 28, 2020 6:50 PM

Situation

Split flow aloft resulted in mostly sunny skies on Saturday. Temperatures were inverted with the mountains starting out in the mid-20s and the valleys in the single digits. Mountain temperatures remained in the 20s as the valleys climbed to near 20. Northwesterly ridgetop winds backed to the west at 20 to 30 miles per hour.

Sun crusts can be found on steep slopes that are heavily impacted by the sun. On partially shaded aspects, surface hoar resides above weaker sun crusts and is persisting throughout the heat of the day. Surface hoar and near surface facets are prevalent on mostly shaded slopes.

Forecast For Sunday, November 29, 2020

A weak disturbance with limited moisture and associated cold front will bring some cloud cover overnight before mostly sunny skies return during the day on Sunday. Overnight lows in the mountains will be near 10 degrees before rising into the mid-20s during the day. Westerly ridgetop winds will veer to the east at 5 to 15 miles per hour.

The general avalanche hazard is expected to be Low on Sunday. Above 9,000 feet, skiers and riders might be able to trigger an isolated pocket of slab up to a foot deep in very steep, avalanche prone terrain. Elsewhere, avalanches are unlikely.

Trend For Monday, November 30, 2020 AND Tuesday, December 01, 2020

A light dusting of snow may be possible Monday night into Tuesday. With little to no new snow in the forecast, the general avalanche hazard is not expected to change.
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