Avalanche

Middle Fork

FACFlathead Range & Glacier NP
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Quick report

Cracking
widespread
Collapsing
widespread

Today we went for a ridgewalk in the Flathead Range to escape the chaos of the windy valley.

- Only a couple of inches of snow on top of a wet snowpack at low elevations. Snow heights increased rapidly with elevation. Roughly a meter (3 feet) of new and recent snow. 

- We experienced many audible collapses at middle elevations (5000-6500). One of the collapses shook snow off of trees 30 feet away. 

- We kicked and stomped small test slopes and were able to easily trigger small slides in new snow. 

- Minimal wind-drifting at middle elevations. There is a lot of snow available to transport. 

- We observed roughly 5 large avalanches at middle elevations. All but one of the crowns were mid-slope and crowns wrapped around terrain features. The bed surface had a sheen to it that looked crust-like. I anticipate these all failed on one of the faceted crusts (Christmas or Mid January). 

Trail breaking was arduous. Snow is slow. We stuck to ridgelines. 

Loud audible collapses between 5000 and 6500 feet. We experienced 6 throughout the day.

Weather

Cloud Cover
overcast
Wind Loading
light
Recent Snowfall
3 feet
Snow Avail For Transport
large amounts

Dropping temps throughout the day. Sun was trying to poke through but never did.

Snowpack

New snow/recent snow=1 meter. Mid-Jan crust down 130 cm. Christmas crust down 150cm. 

Avalanche

Size
D2 R3
Type
HS
Count
2
Aspect
NE
Trigger
N
Elevation
6000 ft

Natural avalanche activity observed was all at middle elevations. Upper-elevation terrain was obscured by clouds for most of the day.