Observation: Upper Long Hollow

Observation Date
01/31/2018
Observer Name
weed

Region:

Location Name or Route
Marge's, Peterson Hollow, Long Hollow
Weather
Sky
Overcast
Wind Direction
West
Wind Speed
Strong
Weather Comments
Cold and very windy
Snow Characteristics
Snow Surface Conditions
Wind Crust
Rain-Rime Crust
Snow Characteristics Comments

Thin rime crust capping last week's powder, not too bad and deteriorating in the trees, a bit thicker in open terrain.  

Red Flags
Red Flags
Wind Loading
Avalanche Problem #1
Type
Wind Slab
Trend
Same
Problem #1 Comments

West wind was strong enough to drift snow around in upper Long Hollow.  Stripping the thin crust off windward slopes and picking snow up in flat open terrain or fetches and depositing it in the form of stiff drifts in deposition areas.

Avalanche Problem #2
Type
Persistent Slab
Trend
Decreasing Danger
Problem #2 Comments

This danger appears to be gradually diminishing in most places, but I don't ever trust buried facets.

Snow Profile
Aspect
East
Elevation
8300
Slope Angle
18
Comments

I was easily able to trigger cornice falls and to crack out small, 1' deep wind slabs in stiff ridge top drifts.

Saturday night's rime-crust on open mid-elevation terrain shimmers in the defuse sunlight.

Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate
Snow Profile Coordinates