| Trigger | Unknown | Remote Trigger | 0 |
| Avalanche Type | Soft Slab | Aspect | Southwest |
| Elevation | 3100ft | Slope Angle | 40deg |
| Crown Depth | unknown | Width | unknown |
| Vertical Run | unknown |
Avalanche: Turnagain
Location: Sunburst
Sunburst up track to about 1,700 ft in the alders with the Alaska Avalanche School Level 1 course.
Avalanche Details
D2 avalanche happened today at approximately 1:45pm. Likely a remote trigger from a snowmachine traveling on the ridge.
Heard it but did not see the avalanche in motion, noticed it a few minutes later when sunshine showed the obvious fresh avalanche.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | Yes |
| Cracking (Shooting cracks)? | No |
Observer Comments
2 whumphs at about 1,500 & 1,600 while traveling spaced out breaking trail to the climbers left of the typical up track.
3 recent (yesterday or last night) mid to late storm avalanches evident on sunny side SW aspect.
Then the avalanche that happened at approximately 1:45pm just south from the 3 naturals.
Weather
Broken skies, calm wind, temps just above freezing
Snow surface
3cm relatively supportable rain crust up to about 1,400 ft on surface. Above 1,400 ft wind affected snow surface.
Snowpack
Exciting day for snowpack observations! Whumphing, recent avalanches and exciting snow pits.
Snowpits at 1,700 ft clearly showed the New Years Eve surface hoar was reactive.
CT2Q1, CT15Q1, ECTP14 all on surface hoar layer about 65cm down.
D2 avalanche on sunnyside today estimated at 1:45pm. Likely remote trigger from a traveler on the ridge
Snowpit on Sunburst at 1,700 ft. The reactive Surface Hoar layer is low in the snowpack here, lowest popsicle stick in photo.