D-Scale
This is an avalanche that is relatively harmless to human.
What is a D1 avalanche?
We have received 12" of new snow in the past 2 days and/or it's currently snowing about 1" per hour for more than 8 hours.
What is Heavy Snowfall.
What avalanche problem forms with new snow and moderate winds?
What is a wind slab.
What is an avalanche that can bury and destroy a car or destroy a wood frame house?
D3 avalanche
This sound is a warning that weak layers are collapsing in the snowpack?
What is a whumpf.
What are observations/tests I can use in the field to look for wind slabs and/or test for instabilities?
What is the avalanche size that could bury, injure or kill a person?
A D2 avalanche.
What is the #1 sign that you may trigger an avalanche by seeing this?
It just snowed 12" in 24 hours and I am in a wind protected area. What avalanche problem should I be concerned with due to the new snow?
What is Storm Slabs.
There is buried weak snow 6ft deep. It is unlikely to trigger an avalanche but if this layer slide it would be catastrophic. What avalanche problem am I?
There is a buried weak layer down 2ft and lots of reports of remote triggering. What avalanche probalm am I?