Trigger | Skier | Remote Trigger | Unknown |
Avalanche Type | Cornice Fall | Aspect | South Southwest |
Elevation | 3500ft | Slope Angle | 45deg |
Crown Depth | 7ft | Width | 20ft |
Vertical Run | 400ft |
Standard uptrack.
Trigger | Skier | Remote Trigger | Unknown |
Avalanche Type | Cornice Fall | Aspect | South Southwest |
Elevation | 3500ft | Slope Angle | 45deg |
Crown Depth | 7ft | Width | 20ft |
Vertical Run | 400ft |
Number Caught/Carried? | 1 | Number Partially Buried? | 0 |
Number Fully Buried? | 0 | Number Injured? | 0 |
Number Fatalities? | 0 |
Two approximately car sized sections of the cornice broke underneath a skier trying to boot pack to the summit. Skier managed to stay to the right of the majority of the debris and resultant slide. No lateral propagation of any slab that released as a result of the cornice failure.
Skiers were attempting a boot pack to the summit approximately 5 feet from the edge of the cornice from the top of the standard uptrack to the summit.
No rescue needed.
Recent Avalanches? | Yes |
Collapsing (Whumphing)? | No |
Cracking (Shooting cracks)? | No |
Cornice failure is possible. Glide cracks are abundant on all aspects.
Calm, overcast cloud deck at 5000 ft. Intermittent fog from 11am to 3:30pm. 32 degrees at road level (car thermometer), ~ 25 at the top of the uptrack (proxy from Sunburst wx station).
Settled powder from 11-04 storm (approx 6"). Rain and melt crust from Tincan parking lot to approximately 1800 feet.
Only informal tests were performed. Pole test and hand sheer test performed with no obvious signs of instability. Snow is very dense and water laden.
Cornice fall avalanche near Tincan Summit
Cornice fall avalanche near Tincan Summit wide view
Widespread glide cracks on northern face of Sunburst with one slide down to Lyon Creek.
Glide cracks Seattle Ridge
Glide cracks Seattle Ridge
Glide cracks Seattle Ridge
Glide cracks and slides on south face of Eddies
Storm slab release from what was likely the Halloween weekend storm. Path covered by the Nov-4 light snow event.