Avalanche: Summit

Location: Summit Lake Road Obs

Date:

February 21, 2019 3:00pm

Observer:

H. Thamm Professional

Route & General Observations

Drove through Summit Lake between 2-3pm. Numerous large natural avalanches were triggered by winds on East and Southeast aspects of Fresno Ridge, Colorado Peak, and Summit Peak. Winds were strong and blowing snow was prominent from 11am through the afternoon.

Avalanche Details

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Trigger	Natural	Remote Trigger	0
Avalanche Type	Unknown	Aspect	Unknown
Elevation	unknown	Slope Angle	unknown
Crown Depth	unknown	Width	unknown
Vertical Run	unknown

Red Flags

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Observer Comments

Six D2-D2.5's on Frenso on SE to East aspects, including one that looks to have stepped down to older snow near the ground
Two D2's and a D1 on Colorado Peak
Four D1.5-D2's on Summit Peak

Weather & Snow Characteristics

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Weather

Strong NW winds
Temps mid 20F's
Partly cloudy

Photos & Video

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Natural avalanche activity on Summit Peak, SE aspect

Close up of the largest avalanche on Summit Peak, SE aspect

Colorado Peak avalanches

Slightly different view of one of the above avalanches on Colorado Peak

Small wind slab on Colorado Peak

Fresno SE aspect

Location

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