Request from Teacher - Video w/ Weather

I need a suggestion for a video that I can access online where they discuss how rapidly the weather changes while you're in the mountains.

My science class is combined with our winter program for the next couple of weeks, so we're covering various backcountry safety topics. I want to introduce them to the idea that being prepared for changing conditions is important (and the science bit will be *why* those changing conditions occur).

Any help would be greatly appreciated! Thanks!

Perhaps the intro sequences to The Thin Line? They have some very neat time-lapse video of the weather and its changes in the mountains.
has a taste of it.

Thanks!