It does - thanks Mike and Scott.

PS

-----Original Message-----
From: Vermont Skiing Discussion and Snow Reports
[mailto:[log in to unmask]]On Behalf Of Scott Braaten
Sent: Tuesday, March 14, 2006 6:01 PM
To: [log in to unmask]
Subject: Re: [SKIVT-L] Upslope Snow Event Accumulations


On Tue, 14 Mar 2006 15:54:25 -0500, Mike Bernstein <[log in to unmask]> 
wrote:

>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.
>

Mike has it covered pretty well.  Just whenever I mention an upslope snow 
event (hard to even term it "storm") I mean that there is no major 
synoptic (low pressure system for example) storm but more a localized 
event caused by the forced lifting from terrain.  95% of the time it will 
not include significant accumulations in the lower elevations and is very 
localized even in the higher terrain (right along the spine). 

Same deal with a lake effect event...it is a "snowstorm" for the few 
people under the lake band, but on a whole, it doesn't affect many 
populated regions.

Hope that and Mikes description helps,
Scott

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