NYC slammed with harsh rain, floods as incoming nor’easter bringing severe storms across region

Résumé détaillé

Up to a foot of snow could blanket the highest elevations of the Adirondacks and Vermont’s Green Mountains, with the heaviest snowfall expected Friday afternoon and evening.

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A nor’easter is expected to lash the I-95 corridor with heavy rain and gusty winds beginning Thursday, while dumping the season’s first significant snow across higher elevations of upstate New York and northern New England into the weekend.

A strong ridge of high pressure building over the western US will help colder Canadian air push south into the Northeast while warmer air remains across the West.

The contrasting air masses will help provide the atmospheric lift and upper-level energy needed to support a strengthening area of low pressure, setting the stage for the late-week storm.

Rather than a typical El Niño-driven weather pattern, this setup is being influenced by the polar jet stream.

A pronounced dip in the jet stream will allow colder air to plunge southward, helping an area of low pressure develop somewhere between the Great Lakes and Ohio Valley before moving toward the East Coast.

By Thursday, the area of low pressure began moving toward the Northeast.

Showers grazed parts of the I-95 corridor, while Vermont, New Hampshire and portions of upstate New York began to see snow.

By Thursday night, the area of low pressure is expected to approach the New Jersey coast, bringing periods of heavy rain to Philadelphia and New York City.

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