(Premium) Record Breaking Cold Possible Sunday Morning… Another Storm Next Week?

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Coldest air of winter to arrive this weekend

A large arctic airmass, owing to a piece of the polar vortex, will drop southward late this week and weekend from Canada into the Great Lakes and Northeast United States. With it will come the coldest air of the winter — and the coldest air in quite some time, especially aloft. Temperatures at 850mb, or roughly 5000 feet, will drop to nearly -30 degrees celsius, challenging some records for temperatures at that level in the Northeast US for the date.

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Behind coastal storm, more snow possible Tuesday

Two atmospheric disturbances within a relatively short distance of one another will impact the area early this week, with the first and more powerful storm grazing the area on Monday. That storm system will strengthen off the East Coast and shift northeastward, bringing periods of heavy snow to Long Island on Monday. The bands of steady snow should graze New York City and the NJ Coast, as the fringe of precipitation sits near the area.

Behind this storm system, precipitation will remain in the forecast — not the typical dry air and clearing that we often see behind Nor’Easters. Instead, another atmospheric disturbance will drive southeastward from the Great Lakes to a position near the Mid Atlantic on Tuesday, and a surface low pressure area will develop off the coast of the Northeast US yet again.

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Complex setup, powerful coastal storm to graze area

An anomalous and powerful coastal storm is likely to graze the area late this weekend and early next week, with a tremendous breadth of precipitation as the center of low pressure passes hundreds of miles to our east in the Atlantic Ocean. Forecast models have come into better agreement on the evolution of  a large and intense mid and upper level system, with an impressively strong trough moving from the Southeast States to a position southeast of New England by Monday.

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