However, most computer models suggest that there will be two pieces of energy - a primary system over the Tennessee Valley, and a secondary or coastal piece of energy off Cape Hatteras.
There are significant differences in the models on which storm will predominate, and in particular their tracks and intensities.
For now, a wintry mix is on the table for the D.C. - Baltimore metro region, with elevation-dependent snow (possibly heavy) over the mountains to our north and west.
Once the storm departs Monday morning, a reinforcing blast of chilly arctic air returns to start the first week of April.
Here is the best guess concerning positions and intensities of the two storms, from the NOAA Weather Prediction Center:
|Forecast Map, Sunday Morning|
|Forecast Map, Monday Morning|
Bottom line: I expect a rain-sleet-snow mix here overnight Sunday, with a low chance of a major snowstorm.
Stay tuned as the details of this complex forecast continue to get better resolved.