| Trigger | Natural | Remote Trigger | 0 |
| Avalanche Type | Unknown | Aspect | Unknown |
| Elevation | unknown | Slope Angle | unknown |
| Crown Depth | unknown | Width | unknown |
| Vertical Run | unknown |
Avalanche: Turnagain
Location: Seattle Creek Glide Avalanche
Witnessed a large glide crack avalanche today in Seattle Creek @ Turny around 4pm Saturday. Not human triggered from what I could tell. There were a couple of sled tracks about 100 yds to the right of the slide. We were riding in the drainage area for close to 2 hours prior, and saw no other action or sign of impeding release. Seemed sympathetic to sun/spring shed??
Observed from the top of Triangle Bowl looking down in Seattle Creek. Estimate 1-1.5 miles away from slide. Sounded like a jet taking off or explosion. Not a large snow cloud, looks similar to a landslide videos with slabs/chunks the size of small homes or tractor trailers floating down. Debris continued to move down close to 1 min after the main slide occurrence from the top.
First large glide on this this specific aspect (East.) Notice 2 sledders in lower left of picture.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | No |
| Cracking (Shooting cracks)? | No |
Two snowmachiners in foreground are on the last ledge before you drop down into seattle creek drainage.
Glide release on an East aspect. Photo taken from the top of Triangle Bowl looking into Seattle Creek.