Monday, December 21, 2009

Christmas Storm System

As Aaron mentioned on Sunday, a storm system will move into the Pacific Northwest today, cross over the Rockies, and strengthen in the Plains by mid-week. This storm will track to our north by Christmas Day, bringing a good chance for rain in the Commonwealth. However, there is a window of opportunity pre-dawn Friday for there to be a winter mix mainly west of I-95 before warmer air surges northward at all levels above the ground. Chances for this will be better the farther west you go into the Piedmont and the mountains. Everywhere temperatures will rise well above freezing Christmas morning, ending any winter precipitation threat in the area. So it's looking like this will be a Wet Christmas, not necessarily a White one.

If you have travel plans mid-week to the west, here's where the storm will be Christmas Eve Morning:

That may cause air traffic delays Christmas Eve from the Midwest to the Gulf Coast.


And by Christmas Morning: