Observation: Hatcher Pass

Location: Presidents Ridge and Road observations

Route & General Observations

On Wednesday we drove up the road which was not plowed, got stuck at the top of mile 16, and toured up the lower South ridge of Marmot. Many of our tests failed on isolation. Limited visibility inhibited our ability to see any natural avalanches Most obs from this day can be seen in Thursday’s forecast.

Today, we toured up president’s ridge to check on stability. Also drove up the road to see if any natural avalanches from the most recent storm could be observed.

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

Collapsing and cracking occurred while traveling today. Cracking/collapsing was most prevalent at mid elevations in areas with vegetation. One large collapse occurred on Presidents ridge around 3750';. All collapsing/cracking occurred after several people had traveled over the spot on the skin track.

Several Natural avalanches were observed or reported through out the forecast area.

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

Winds remained calm throughout the day today and no signs of active wind transport were observed. Broken sky in the morning began to clear as day progressed. With the clearing temps began to drop throughout our tour.

Snow surface

HP received approximately 2" of SWE and 18-20"; of new snow 12/5-12/6. The snow came in right side up with a rain crust mid storm that is buried 30-40cm deep.
We observed smooth snow surfaces and low density snow for most of our tour today. Evidence of old wind effect could be observed in some areas but didn't affect ski quality. Rocks are still lurking below the surface in some areas.


The rain crust could be felt 12 inches below the surface up to 3900' feet.

Photos & Video
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