Here is some link to what I said: First the air mass distribution in american situation, 2- the distribution of the jet stream, we are at the 45 to 60 degree, 3- and the oscillation of the jet stream with global warming.
As jet stream is very important to predict the weather, the knowledge of the air mass will help people to be safer every where in the world. In alaska, where there is nice places to ski, the air mass are different and so the weather. After a while, you will understand that the cliff is like a patch work. With rock, ice, snow field, hoar ice (present year), and other ice condition.
The difference between a guide like chauvin and synnot is that, even if they don't explain that theory on meteorological aspect, they know how to evaluate the patch work on the ground...what guide with spot check (avy danger done actually) can not do. The guide who sky and was caught by the avalanche is a good example of that. Think when wrong unexpectably, as it those for the avalanche forecaster from utah, but in the particular situation of the guide in Mt Washington, he ski down first to a safe place. So, it is safety rules that save him. Imagine if he went down hill to the bottom without stopping at a safe place???
Unfortunately, the people will think that Dman was correct and the guide caught by the avalanche was wrong. they will follow course with who? unfortunately, with a good guide you will understand that he save your life months after when it is you who will take a decision and after it, thing will go wrong. With a bad guide, you will think that you are safe because you can not see the patch work in the cliff.
As I bring some theorical knowledge to the forum, I don't want to annoyed Chauvin and Synnot. I know that in the wild, I am at there "ankle level" (hauteur de la cheville, french expression). And I prefer some one who won't tell me any thing, but bring me to think at the consequences of my act by bringing me in control situation when the think go wrong...more than a guide that put all his safety rules in the same basket (avy danger).