Observation: Other Regions

Location: Moose Pass- Ptarmigan Ridge/Solar Mt

Date:

December 24, 2018 2:00pm

Observer:

James Lyons

Route & General Observations

Skin up mine rd then up bowl from 2500-2800’. Pit dug at 2600’ on 31degree Northern aspect. Old avalanche debris found starting at 2800’ with supportable wind slab. Turned around at this point.

Contact, Location & General Observations

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Forecaster Comments

Edited for accuracy. Layer that can be held is a melt-freeze crust. From photos suspect facets above. Propagation occurred on top of the crust.

Red Flags

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Obvious signs of instability

Recent Avalanches?	Yes
Collapsing (Whumphing)?	No
Cracking (Shooting cracks)?	No

Observer Comments

Older avalanche debris on intended slope to ski.

Weather & Snow Characteristics

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Weather

Clear, calm, 20F

Snow surface

14 cm soft

Snowpack

75cm total depth well consolidated to 50 cm depth. Melt freeze crust 50-65cm depth and 15cm thick. Can dig out and hold this layer. ECTP23

Photos & Video

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75cm depth snowpack, consolidated to 50cm where solid persistent weak layer lives

15cm thick crust

Old Avy debris on intended ski route

Location

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