A cold front will approach the DC Region on Tuesday morning before stalling as a several waves of low pressure move along the boundary during the middle portion of the work week.
Periods of rain showers and widespread moderate rainfall are likely Tuesday through Thursday morning before conditions clear out on Thursday afternoon/evening into Friday.
Latest Rainfall Forecast Totals:
European forecast model (image below) showing potential rainfall amounts (in inches) with one to four inches of rain possible across parts of the Deep South, Appalachians, Mid-Atlantic and New England Tuesday through Thursday morning.
Closer look at the DC Area:
The image above is from the latest Canadian model showing between one and two inches falling across our area Tuesday night into Thursday morning. Great news!
As we head into December, colder air should begin to infiltrate much of the northern tier of the United States with an active pattern.
The image below is the latest European Snowfall accumulation forecast through the 10th of December.
The heavy amounts of snowpack seen across southern Canada, Nova Scotia, Newfoundland, New England and the Midwest (image below) should help to eventually shift the storm track a bit further to the south.
On average, our first inch of snow typically falls by December 15th.