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Highway to peak survey of conditions on the east side of the Flathead Range. Still avalanche season at mid and upper elevations.
As of early afternoon, the wet snow avalanche danger seemed greatest at mid elevations, where the recent storm snow is wet due to several days of continuous temperatures above freezing. The wet snow instability could rise to higher elevations with rain showers tonight and warmer temperatures tomorrow. Recent storms have deposited plenty of snow that has yet to shed from steep faces.
Ran naturally between the time we skinned past the bottom of the gully. Looked to have been triggered by snow falling from trees; debris ran into confined gully and out to flats below. One similar but smaller slide just upslope.
Ran off in gully coming off Cascade/ Rescue ridge. Debris ran to lower track., covering older debris but not running as far. Appeared to start 5-5500 feet.
Wet loose debris below main gully off east face of Mt. Penrose. Rain in recent snow. Couldn't see starting zone elevation. Ran to ~5300 feet.
Natural slab avalanche from steep, northwesterly slope at edge of main avalanche path off Nyack Mountain. Ran down to flats, about 1000 feet. Debris was rounded wet debris, but guessing it started dry and picked up wet snow in gully.
Triggered intentionally on descent.
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