Bridger Teton Avalanche Center
WESTERN WYOMING AVALANCHE ADVISORY
Issued on Sat November 17, 2018 6:27 PM
A cold front dropped down from the north through Western Wyoming overnight and into Saturday morning. This system brought a quick burst of snowfall to the region. After frontal passage, skies began a clearing trend with cloud cover lingering over the mountains a bit longer than the valleys. Mountain temperatures rose into the upper teens to low 20s as the valleys climbed into the low 30s. Northerly to northwesterly ridgetop winds ranged from 5 to 15 miles per hour.
Last night’s cold front favored the Togwotee Pass area, which received six to eight inches of new snow. Three to five inches accumulated in the Tetons, and a bit less fell in the Southwest Trails forecast zone. The new snow, which had densities around 8%, quickly began to settle. A few shallow point slides emanated from cliff bands and rock outcroppings on slopes that received significant sunshine.
FORECAST FOR Sunday, November 18, 2018
Expect mostly clear skies overnight as a ridge of high pressure begins to move into the region from the west. Some thin, high clouds will be possible on Sunday. Overnight lows in the mountains will drop into the single digits before rebounding into the mid-20s during the day. Westerly to northwesterly ridgetop winds will remain light at 5 to 15 miles per hour.
The general avalanche hazard is expected to be Low on Saturday above 8,500 feet. Up there, backcountry travelers might be able to trigger an isolated pocket of shallow soft slab or loose snow sluff in very steep, avalanche prone terrain. Below 8,500 feet, snow depths are insufficient for avalanche activity.
TREND FOR Monday, November 19, 2018 AND Tuesday, November 20, 2018
High pressure and dry conditions will dominate into the beginning of the week with temperature inversions developing overnight. The general avalanche hazard is not expected to significantly change until Thanksgiving when the weather pattern is forecasted to change.
For further information call 307-733-2664
To report an avalanche observation call 307-739-2607
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