A moisture induced system will develop over the Deep South and TN Valley later tonight and move ENE to the NC Coast by Tuesday. This system is what I call a Southern Slider and will bring significant amounts of snow to much of the M/A region, especially the lower M/A.
A large trough and Arctic air mass are now in place across much of the Eastern CONUS. At the same time, Sub-tropical moisture and energy from the southern Jet Stream will partially phases with the northern branch trough. This will allow for a large area of precipitation to breakout along the southern axis of the mean trough. Some of this precipitation with be moderate to heavy across the TN Valley into much of NC/VA and to the Delmarva mainly in the form of snow.
Across parts of NC and SE VA some Sleet and Ice will be a factor, but still a good amount of snow can be expected over these areas.
The Heaviest snow will likely fall from the TN Valley into much of VA and into the Delmarva. This includes Central and Southern DE and Extreme Southern NJ, mainly south of a line from DOV, DE to near ACY, NJ. In these areas 8″-12″ of snow can be expected. For the Delaware Valley a general 4″-8″ can be expected with higher amounts over parts of DE and Extreme Southern NJ (See Snowfall Map)
Timing and Forecast for ROA / LYH / CHO VA.
Light snow will move in during the late morning and afternoon hours from west to east, temps remain in the 20’s.
Snow becomes more steady and moderate to heavy at times during Monday night, cold with temps in the mid to upper teens. Significant snow will fall during Monday Night.
Snow then continues into early Tuesday morning, and then tapers off and ends by noon, cold with highs in the 20’s. Total snow accumulations by Tuesday afternoon 8″-12″
Timing and Forecast for The Delaware Valley:
Includes SE PA, Southern NJ and DE:
Light snow moves in later Monday evening and continues into Early Tuesday afternoon. The snow will become moderate at times later Monday night into Tuesday morning.
Most of the Delaware Valley will see 4″-8″ with higher amounts of 8″-12″ possible from Central and Southern DE into extreme Southern NJ. Mainly south of a line from DOV, DE to MIV, NJ to ACY, NJ (See Snowfall Map)
Enjoy the Storm!