Avalanche Advisory
Advisory: Moab Area Mountains Issued by Eric Trenbeath for Saturday - January 31, 2015 - 6:28am
bottom line

There is an isolated or MODERATE danger for triggering new, recently deposited wind slabs at upper elevations on the lee sides of ridge crests and terrain features. And though diminishing, there still remains an isolated or MODERATE danger for triggering a persistent slab in upper elevation areas of steep, rocky, and radical terrain that has a NW-N-E aspect. Elsewhere the avalanche danger is generally LOW.




current conditions

Well this storm certainly fizzled leaving only 2-3" of new snow in most areas. The dusting has freshened things up somewhat, primarily in areas where the underlying snow surface was relatively smooth, but we are still a long way from optimal winter conditions. SE winds blew yesterday during the "storm" in the 20-30 mph range along ridge tops. This morning they have backed off into the single digits. It is currently 18 degrees on Pre Laurel Peak and 27 at the Geyser Pass Trailhead.

La Sal Mountains Current Weather

Wind speeds and temperature at 11,700' on Pre-Laurel Peak.

New snow totals and temperature at Geyser Pass Trailhead.

New snow totals and temperature in Gold Basin.

Abajo / Blue Mountains.

Winds and temperature on Abajo Peak.

Snow total at Buckboard Flat.
recent activity
Avalanche Problem 1
type aspect/elevation characteristics
LIKELIHOOD
LIKELY
UNLIKELY
SIZE
LARGE
SMALL
TREND
INCREASING DANGER
SAME
DECREASING DANGER
over the next 24 hours
description

The low snow totals in the end have not done much to increase the avalanche danger. You may find some shallow, sensitive wind drifts at upper elevations in wind exposed terrain on the lee sides of ridge crests and terrain features.

Avalanche Problem 2
type aspect/elevation characteristics
LIKELIHOOD
LIKELY
UNLIKELY
SIZE
LARGE
SMALL
TREND
INCREASING DANGER
SAME
DECREASING DANGER
over the next 24 hours
description

The new dusting of snow has not added significant weight to our fragile snowpack. In general we have reached a point where conditions are "weak but stable" and the chances of triggering a persistent slab are becoming unlikely. Nevertheless, there still may be isolated areas where it is possible to trigger a persistent slab.This danger is most pronounced on upper-mid to upper elevation slopes steeper than 35 degrees that have a NW-N-E aspect, particularly in areas of rocky terrain that have a thin shallow snowpack.

weather

What's left of the storm will slide out today with occasional lingering showers into the afternoon. WSW winds at 10-15 mph will shift to northerly as the storm exits our area. High temps at 10,000' will be right around freezing. A ridge builds on Sunday bringing sunny skies ahead of an unsettled NW flow early next week.

general announcements


Road Conditions: The light amount of snow will not have affected the road.  

Grooming Conditions: Trails are scheduled to be groomed on Monday and Friday. 

Observations: If you are out and about, I would love to know what you are seeing. Please post your observations here.

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This advisory is from the U.S.D.A. Forest Service, which is solely responsible for its content. This advisory describes general avalanche conditions and local variations always exist. This advisory will be updated on Thursday, January 22.