| Trigger | Natural | Remote Trigger | No |
| Avalanche Type | Soft Slab | Aspect | East |
| Elevation | 3500ft | Slope Angle | unknown |
| Crown Depth | unknown | Width | unknown |
| Vertical Run | 1500ft |
Avalanche: Chugach State Park
Location: Arctic to Indian
Toured Arctic to Indian until about mile 12. As we gained elevation and began approaching the pass, we began to notice windslab formation and my partner experienced shooting cracks underfoot as he broke trail on a blown in old track. We then observed a Large D3 avalanche run out of a loaded gully across the trail ahead.
Avalanche Details
Observed a D3R4 natural avalanche out of what appeared to be a cross-loaded wind gully. Light was flat--hard to tell the depth or length of the crown, but it we guess it was 2-3 feet deep. The slide ran an estimated ~1500 to 2000 feet and the powder cloud extended all the way to Ship Creek. We did not investigate the debris but another party did and said it extended a short distance beyond the skin track.
Obvious signs of instability
| Recent Avalanches? | No |
| Collapsing (Whumphing)? | No |
| Cracking (Shooting cracks)? | Yes |
Weather
S-1 most of the day and steady winds light to moderate when approaching the pass
Snow surface
Generally, new snow on top of settled powder.
Snowpack
No formal stability tests were performed.