Route & General Observations
Standard route up Sunburst, decided not to investigate skier triggered avalanches due to sunshine, rising temperatures and hangfire. Observed two natural slabs while skinning up on Seattle Ridge and lots of wet loose activity throughout the day. Received at report of large natural slab avalanche on Skookum that occurred around 5 pm and checked that out from the highway on the way back.
Obvious signs of instability
|Recent Avalanches?||Yes||Collapsing (Whumphing)?||No||Cracking (Shooting cracks)?||No|
Natural wet loose avalanches and slabs observed during the day
Partly cloudy with sunshine becoming more overcast later in the day trapping in the heat!
Easterly winds 5-15 mph
Temperatures in the mid 20Fs to low 30Fs at upper elevations and high 30Fs to 40Fs at road level
2" of new snow becoming wet on southerly slopes in the afternoon.
Southerlys had a suncrust underneath the new snow from sun yesterday
2-3' of new snow over hard wind affected snow or settled snow over buried weak layers... Jan 21 buried surface hoar/facets at upper elevations or the mid January facet/crust combo at mid elevations. Did some probing along the route snowpack depths varied from 50 cm to 3 meters.
Dug 3 pits:
Pit # 1 @ 2100' (see photo)
Pit # 2 @ 2800', quick pit in shallow spot HS: 70 cm, new snow over 30 cm melt freeze crust to the ground. No results in CTs
Pit # 3 @ 3100" (see photo)