CNFAIC LogoCNFAIC Logo

Observations

Region: Hatcher Pass
Location: Marmot
Observer:
Date:

Route & General Observations

Alaska Avalanche School Level 1 Travel Day. Our class split up into 3 groups and my group toured up to ~3400′ on Marmot S Ridge from Mile 16 lot and skied back down. Variable snow conditions ranging from 4″+ thick wind slabs on SW and E aspects to 1-2″ of snow on melt freeze crust or bare melt freeze crust on S aspects. One shooting crack noted on a wind loaded SW aspect.

Red Flags

Obvious signs of instability

Recent Avalanches?NoCollapsing (Whumphing)?NoCracking (Shooting cracks)?Yes

Observer Comments

One 5' shooting crack in a wind loaded area on a SW aspect

Snow Characteristics

Snow surface

Variable snow surface conditions ranging from 4"+ thick wind slabs on SW and E aspects to 1-2" of snow on sun crust or bare sun crust on S and SE aspects. The sun crust ranged from breakable to firm and supportable. Note that as soon as we noted wind slabs underfoot we ventured off them due to reactive wind slabs yesterday. Wind slabs ranged from supportable to breakable. The wind slabs are likely thicker in many leeward locations.

Snowpack

No formal stability tests. The new settled snow or wind transported snow is either sitting on top of near surface facets on shaded aspects or on suncrusts ranging from 1-3" thick over facets.



USFS SNOW AND AVALANCHE HOTLINE (907) 754-2369
If you have comments or questions regarding CNFAIC operations or winter recreation management, please email staff@chugachavalanche.org
© 2019 Chugach National Forest Avalanche Information Center. All rights reserved.
FCNFAIC
Donate
If you think a public avalanche
center is important then we urge
you to become a member & donate.


PickClickGive