Observation: Summit

Location: General Observation (Cornice Break and avalanche activity in the Roaring Ridge Area)

Date:

February 8, 2018 3:56pm

Observer:

Alex McLain Professional

Route & General Observations

Colder Temperatures and clear sky. Winds generally from the north on Feb.6th and 7th transported snow at upper elevations. Avalanches in the roaring ridge area as well as cornice breaks. Wind texturing at upper elevations.

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

Observer Comments

Previous wind loading and avalanche activity from Feb 6th and 7th.

Weather & Snow Characteristics

Please provide details to help us determine the weather and snowpack during the time this observation took place.

Weather

Summit Lake Valley Bottom: current Temperature 18F Past 24 hours Low -4F High 22F,
Snow Depth 19"
Summit Lake MP 45(3800'): current Temperature 28F, Past 24 hours Low 14F High 28F
Winds past 24 hours: NW changed to South Calm to 10 mph, Peak Gust NNW 16 Mph

Photos & Video

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Cornice Break and avalanche activity Roaring Ridge Area MP 55

Roaring Ridge Drainage additional avalanche activity.

Tritip wind texturing (similar conditions in the Summit Lake Area for upper elevations)

East and South facing slopes blown clear on Colorado Peak

Summit Peak snow Coverage

Location

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