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Avalanche: Summit

Location: General Observation

Date:
Observer:
Route & General Observations

Summit Lake had Rain/ Snow Rain mix with the snow line at approximately 2000′ level. Evidence of 6 avalanches were seen on multiple aspects. Visibility was poor (See Pictures below).

Avalanche Details
If this is an avalanche observation, click yes below and fill in the form as best as you can. If people were involved, please provide details.
Trigger NaturalAvalanche Type0
Aspect UnknownElevationunknown
Slope AngleunknownCrown Depthunknown
WidthunknownVertical Rununknown
Avalanche Details

From South to North: Natural Avalanches at Summit Lake
John MT (MP 41) 1 D-2 West Aspect (Ran 70% of slide path)
Summit Peak 1 D-1 East Aspect (Ran less than 25% of slide path)
Butch Peak Several avalanches D-1+ to D-2 West Aspect(Ran 60% of path)
Fresno Peak (South end) E-SE aspect D-1 (Ran 25% of slide path)
Moose Peak D-1 to 1+ West Aspect (Ran 70% of slide path in gully)

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Obvious signs of instability
Recent Avalanches?Yes
Collapsing (Whumphing)?No
Cracking (Shooting cracks)?No
Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.
Weather

Summit Lake Weather Station:
Temperature 33F Snow Depth: 9"
Precipitation: 1.3" past 24 hours Rain/Rain Snow Mix

Fresno Ridge:
Temperature 28-30F
Winds Current:NE 12mph gust 18mph, Past 24 hours NE 18-42 mph gust 73mph

Snow surface

At lower elevation Very wet saturated snow.

Photos & Video
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