| Trigger | Skier | Remote Trigger | 0 |
| Avalanche Type | Soft Slab | Aspect | Southwest |
| Elevation | 3600ft | Slope Angle | 35deg |
| Crown Depth | 16in | Width | 40ft |
| Vertical Run | 100ft |
Avalanche: Hatcher Pass
Location: (1) MicroDot (3904'), SE aspect, and (2) Rae-Wallace Bowl (3520'), terminal moraine.
Toured from Independence Bowl PL up into Rae-Wallace bowl and SE aspect of MicroDot.
Avalanche Details
A set of three slides, all triggered remotely from above by a skier traversing along the top of the terminal moraine: SS-ASr-R3-D1.5-G x3.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | Yes |
| Cracking (Shooting cracks)? | Yes |
Observer Comments
Slides from Thursday/Friday (12/29-30/16) storm are evident. As mentioned above, whumphing and shooting cracks.
Weather
Thin ovcst skies, light wind, no precip.
Snow surface
Tour traversed wind-affected snow with thin crust in places. Evidence of light wind-sculpting.
Snowpack
HS=45cm. Pit dug on 28 degree slope, 3904' eleva, SE aspect of MicroDot. 45-35 cm, 4F wind fragmented new snow; 35-34.5 cm, ice crust; 34.5-15 cm, F wind-packed rounds; 15-0 cm, 1F melt-freeze old facets. Tests: CT7Q2 at 34.5 cm (Q1) on top of ice crust and at 15 cm (Q2) on top of frozen basal facets; ECTN14 on top of basal facets at 15 cm.
Rae-Wallace Bowl (3520') Three slides remotely triggered by skier from above.
Snow pit (3904') on SE aspect of MicroDot. Note the multiple fracture planes from the compression test (CT).