Today's Weather: Two high pressure areas dominate the northern half of the U.S. with a cold front separating them from Quebec to OK. Unorganized low pressure across the south central states with a central low over western CO. Coldest air is over northern AK and northern Yukon, -29 in the Brooks Range.
Radar: A large area of snow stretches from Norfolk VA to Evansville IN northward up to the PA/MD border out to southern Ohio. Tailing southwest of the snow is a wide area of rain from TN to east TX.
GFS: This afternoon the GFS displays cyclogenesis off of Cape Hatteras NC. The system spreads snow from northern VA, Maryland, and DE northward to southeast PA and NJ. The coastal side swipes LI as the GFS pushes it out to sea by Wednesday AM.
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The next system forms Wednesday night over western TN and tracks towards the St. Lawrence Valley. Mixed precip. spreads into southern and central New England with snow in northern New England by Thursday morning. A second coastal system attempts to form off the north Jersey Shore but this run of the GFS shows the St. Lawrence low dominating the air flow. Consequently, on Thursday morning, the GFS is moving the rain/snow line farther north than yesterday's run penetrating into central VT and NH. Behind the system, cold air rushes back into New England Friday and Saturday.
Saturday, the GFS forms yet another storm over eastern OK and moves eastward and then up the southern Appalachian chain. Sunday, when the system reaches the East Coast a series of disorganized lows form up and down the Eastern Seaboard. The current GFS run shows the lows hugging the coastline which pulls milder moist air with rain for southern and central New England and a snow maker for the North Country. As the system moves to the Canadian Maritimes colder air filters back into New England with the rain ending as snow.
