The air mass currently in place is “borderline” when it comes to its ability to support precipitation in the form of snow; however, the storm track will be quite favorable for snow in the I-95 corridor as this region will be on the northwest side of the system (i.e., on the cold side). While the bulk of this upcoming winter storm event should feature snow in the DC-to-Philly-to-NYC corridor, there can be a brief period of rain or a mix of rain and snow when the precipitation is on the light side such as at the onset of the storm and again near the end of the storm when the precipitation winds down.
Snow accumulation estimates are 3-6 inches for the immediate DC-to-Philly-to-NYC corridor and there can be isolated higher amounts; especially, just to the south and east of Route I-95. The snow will likely come down heavily at times during this upcoming event; especially, in the morning-to-midday hours on Sunday (i.e., a couple hours after arrival time).
The active weather pattern of recent days will continue after tomorrow’s storm with plenty of additional energy in the atmosphere across North America. This will result in additional chances for snow in the Mid-Atlantic region beginning as early as Tuesday of the upcoming week and the threat for wintry precipitation will continue from mid-week right to next weekend.
Stay tuned…an interesting weather pattern unfolding for the next couple of weeks.
Meteorologist Paul Dorian