| Trigger | Skier | Remote Trigger | 0 |
| Avalanche Type | Soft Slab | Aspect | South Southwest |
| Elevation | 1300ft | Slope Angle | 38deg |
| Crown Depth | 12in | Width | 15ft |
| Vertical Run | 20ft |
Avalanche: Turnagain
Location: Tincan, Sunburst
AAS Rec 1 students were on Tincan, Tincan Backdoor, and Sunburst doing field observations.
Avalanche Details
Students triggered avalanches on test slopes around 1,300' on the Sunburst uptrack. The avalanches were small and happening only on 35 degree and over terrain. These were on slopes that were wind loaded with the recent snow. No remote triggers.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | No |
| Cracking (Shooting cracks)? | Yes |
Observer Comments
Wind loading was happening on west, southwest aspects.
Weather
There was snow accumulating throughout the day. Precip rates were S1 to S2. Temp at 2016' was -2C at 14:02. Freezing line later in the day seemed to be around 400' Winds were not strong but blew generally out of the east.
Snow surface
8" of new snow in non wind loaded areas. Good skiing above 1500' at Tincan
Snowpack
Dug 5 pits on Tincan uptrack at 2016'. Generally all ECTX, but one ECTP21 on the 1/21 MLK BSH. The BSH was easily visible. Other students dug at 1300' on Tincan Backdoor and Sunburst and had no significant results in pits. New snow did not seem to have a significant loading effect on the 1/21 BSH layer, although the layer was easily visible in the higher pits.
Sunburst shooting crack
Sunburst crownline
TIncan uptrack pit ECT