Plowable Snowfall Possible for Large Portion of Southern New England Sunday Evening into Early Monday
Weak Storm System Appears To Track Closer to Region
Synoptical Overview:
This weekend a parcel of energy will begin to be steered around the approaching polar vortex that will supply the bout of arctic chill next week.
It will then round the base of the vortex and turn up the coast, however, the primary difference from yesterday is that it now appears as though it will track closer to the region to the region as it passes offshore early Monday.
The obvious implication of this is that it would have a slightly greater impact on the forecast area overnight Sunday and into early Monday morning relative to expectation yesterday, and thus slightly more snowfall.
Expected Storm Evolution:
A separate, lead system will traverse the area overnight Saturday, with precipitation falling primarily in the form of rainfall and some mixed precipitation in the higher terrain.
The follow up energy, which is the system of interest, then overspreads the area on Sunday evening with snowfall across the majority of the area, and rain over the cape and islands,
Snowfall may be slightly heavier over the deep interior, as well as the immediate coast during the peak of the event due to mid level and low level frontogenesis.
The low level convergence along the coast will be in association with the coastal front, which will begin over the immediate north shore, Boston area and interior southeastern Mass Sunday evening, before drifting southeastward overnight.
The other area of potential banding will be attributable to some mid level deformation just to the northwest of the mid level low track, across the northwest Connecticut hills and into Worcester county.
Any rain and mixed precipitation over the cape and islands will transition over to snowfall, as the system begins to pull away during the wee hours of Monday morning.
The last of the snowfall should exit the cape prior to midday.
First Call:
Final Call will be issued on Saturday-
The one large pre Xmas blizzard that ended up phasing west...GEM sniffed it out.
