Observations
Front Range – Ptarmigan
Route & General Observations:
Approached via Rabbit Creek, ascended Ptarmigan southwest slopes. Little to no snow on slopes at elevations below 4300′, with exception of drifted snow in drainages. Avalanches observed in gullies opposite side of valley with northern exposure.
| Trigger | Foot Penetration | Avalanche Type | Soft Slab | Aspect | South Southwest |
|---|---|---|---|---|---|
| Elevation | 4600ft | Slope Angle | unknown | Crown Depth | 18in |
| Width | 20ft | Length | 150ft |
Observer Comments:
Climber-triggered slab avalanche. 10″ to 18″ crown. First climber crossed safely, second triggered avalanche after a few steps.
Red Flags:
None observed
Weather:
Clear, light wind, -5F in shade, 18F in sun
Snowpack:
Powdery, wind-deposited snow on top of very solid wind-deposited snow with facet layer in between. Facet layer approximately 1cm. Well-bonded to ground, ~6′ snow depth. Both layers increasingly solid towards the ground.
Climber was able to roll off slab before it picked up speed:
Pole is set at height of 145cm:
Approximately 150 vertical feet:
Map:
South Fork Eagle RIver – 2 Bowls:
Thin coverage in Eagle River. Punchy turns down to the grass. Wind loaded in areas.
