Lawine

Tunnel Ridge

Avalanche.org observerFlathead Range & Glacier NP
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Beobachtungsfoto 1Beobachtungsfoto 2

Quick report

Cracking
isolated

• Great visibility, above freezing temps, no wind at our high point of 6700' • We climbed the E ridge above Pinnacle Rd and descended the skin track. Skiing was good above 5600' (recycled pow) • Old (wet loose) and a somewhat recent slide (storm slab) were observed in the alpine terrain of the Flathead range. • Coverage is scant on S aspects (up to 6500') • Little in the way of obvious instability. No surface hoar observed but the recent snow (12/23) is faceting above the 12/19 crust. Isolated windslabs (8") (4F) were experienced along ridgeline. Shooting cracks were limited to the skin track and didn't exceed more than skis length.

Weather

Air Temp
Temp inversion
Cloud Cover
clear

Avalanche

Size
D2
Aspect
NE
Trigger
N
Elevation
7200 ft

Observed one crown from last Saturdays "sneaker-storm" in the alpine terrain of Paola Creek at 7200' on a NE aspect. On 12/23 Tunnel Ridge Snow recorded 11" of snow (one 3"/hour rate). Given the partially filled in crown I would estimate the release to have occurred during this storm.