UPDATE: Tue 28 Dec 2010 / 5:15p.m.
The models are in excellent agreement today, and the existing pattern also supports the development of a deep mid-level low (see map below) which will help to urge an arctic air mass southward for New Year's Eve or New Year's Day (discussion continues below map).
A chance of rain along the front Friday is expected to be long-gone before any ice or snow potential materializes; westerly winds will probably arrive ahead of the main pocket of cold air.
So, we'll probably be "dry-slotted" and get a cold, windy and dry New Year's Eve and beginning to the year 2011.
The weather pattern will moderate this week ahead of another large "blob" of cold.
This cold air will regenerate over the northern reaches of Canada, and begin to move southward as a deep trough forms over the western U.S (discussion continues below maps).
This air looks to be similar in coldness to the air of Christmas weekend. Precipitation is possible along the front, but present indications do not favor a significant winter weather event.
Look for my next blog update on Dec 28th around 6p.m.