Observation: Turnagain

Location: Center Ridge

Date:

February 12, 2021 9:44pm

Observer:

Joe Stock with Nick and Elliot

Route & General Observations

Center Ridge. Beauty day.

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)?	Yes
Cracking (Shooting cracks)?	Yes

Observer Comments

Many signs of instability: positive results on test slopes, recent avalanches, wind loading, shooting cracks, and widespread whumpfing above the weather station on surface hoar buried about 30 cm down.

Weather & Snow Characteristics

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

Weather

Partly cloudy to clear, 20's, calm

Snow surface

Some wind scour but mostly soft new snow.

Snowpack

The buried surface hoar layer buried about 30cm deep was the layer of concern. We watched whumpfs propagate away from us as slow visible waves.

Photos & Video

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Surface hoar layer that was easy to find in hand pits.

The surface hoar layer resulted in small avalanches on our test slopes.

The south side of Tincan from Center Ridge. Some volunteer testers skied the slope without any avalanches. If only I could be so lucky!

Location

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