|Region:||Anchorage Front Range|
|Location:||Harp Ridge near South Fork of Eagle River|
Route & General Observations
We parked at the base and skied up the right gully, and turned around halfway up due to snow pack instability. As we skied to the base of the gully we saw an avalanche in motion that was naturally triggered in the gully next to us.
|Trigger||Natural||Avalanche Type||Hard Slab||Aspect||West Southwest|
|Elevation||unknown||Slope Angle||unknown||Crown Depth||unknown|
Naturally triggered; rapid windloading at top of the gully.
Obvious signs of instability
|Recent Avalanches?||No||Collapsing (Whumphing)?||No||Cracking (Shooting cracks)?||Yes|
Wind slabs, shooting cracks further along the gully, cornices. First obvious signs of instablity occurred at an angle of 42 degrees.
Sunny, temps at around 0 degrees F. Very windy on exposed terrain.
Wind crust on exposed terrain. Fluffy powder further down the mountain below gullies.
Informal instability tests were done with ski poles and snow pits. Enough data to find out the slope was too unstable for further travel.