Observation: Turnagain

Location: Bertha Creek/Granddaddy

Route & General Observations

Toured up Bertha Creek, up the north face of the valley’s headwall, over to Granddaddy Couloir. Lots of avalanches but good dry snow up high on north facing aspects.

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)?No
Observer Comments

Lots of wet point release and some wet slabs on south and west facing aspects. Northeast facing aspect of the valley with dry (but wetter looking) point releases starting from rocks.

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

Sunny, warm. Low winds.

Snow surface

The snow was crusty up to ~3000ft and turned into dry snow on north facing aspects above this. Later in the day, ~4pm, snow below 2500ft was wet and unsupportable, boot prints up to the knee.


Snow pit at 3800ft on north facing aspect of Bertha Creek valley head wall.
CT12, 12cm down. Q2
ECTN12 at 12 cm down - failure in this layer was only under the shovel on ECT, no propogation further down the column.
Firmer layers also existed at 55cm down and 100cm down. These didn't react in testing. These were overlying what looked and felt like facets that were getting more moist and cohesive.

Photos & Video
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