On Tue, 14 Mar 2006 13:48:15 -0500, Peter Salts <[log in to unmask]> wrote:

>Scott - maybe you have discussed this before, but, what exactly is an 
upslope event?  I have a general idea but I'm sure it can do with some 
more explanation.
>

Not to step on Scott's toes, but this is a layup.  Basically when you have 
moist air being advected into the area, it hits the 3000' to 4000' wall 
that is the Green Mtn spine.  You end up with orographic uplift, as the 
air must climb from the depths of the Champlain Valley over the top of the 
spine.  As the air increases in elevation, it cools and loses it's ability 
to hold this moisture.  As such, assuming a proper temp profile, you end 
up getting clouds and snowfall along the spine (obviously this doesn't 
just happen here.  This phenomenon is partly responsible for the 
tremendous snowfall totals in the Wasatch and the Tetons) while it might 
be sunny in Burlington and Montpelier.

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