|Signal Word||Size (D scale)||Simple Descriptor|
|Small||1||Unlikely to bury a person|
|Large||2||Can bury a person|
|Very Large||3||Can destroy a house|
|Historic||4 & 5||Can destroy part or all of a village|
You can get away with skiing/riding all kinds of terrain right now BUT triggering a very large avalanche is still possible, as we just saw with the one that hit the road. A large avalanche problem still exists with old weak layers lingers in the snowpack. The problem is challenging to find and stubborn to trigger in most locations. We saw evidence of this problem Thursday with a few recent avalanches. One avalanche is believed to have been remotely triggered, on a S aspect at approx: 3500 ft. in Marmot gully#3( lookers right of the standard Marmot uptrack). This avalanche was large and crossed the road by 100 yards, and closed the road.
A second avalanche shortly after was reported on a W aspect of President’s ridge at a similar elevation. Trigger is unknown.
Snomachiners also reported a remotely triggered small slab on a S aspect at 2600′ near Idaho Peak. Although further away up Buffalo Mine, another incident occurred with a snomachine remotely triggered large slab avalanche.
We suspect that this persistent slab problem is easier to detect at low and mid elevation, on shallower slopes, most likely SE to W aspects where widespread whumping continues to be observed. It will be more challenging, but not impossible, to trigger this slab on most leeward aspects where the January facets are buried 3-5 feet deep.
Spring time temps are beginning to warm up and affect snow surfaces. If we see a rapid warm up, expect avalanche danger to increase.