For the remainder of December the forecast calls for most of the colder than normal temperatures to remain over the Rocky Mountain States and Great Plains with milder than normal temperatures over the Atlantic Seaboard. Precipitation will remain above normal for the Southern Plains northeastward across the Mississippi Valley, Great Lakes and Northeast, while a noticeable dry bias will remain in place over a large part of the West Coast and Florida. Due to the progressive flow pattern, the risk of a major winter storm will remain below normal over the Lower 48 through at least Christmas Day; however, there will be periods of significant snow, mainly centered over the Rockies and Plains, through the 3rd and 4th weeks of the month.
via YourWeatherBlog.
S4 Worldwide 