7:00 AM | **A major coastal storm with a long-duration impact on the Northeast US over the next few days**

6-Day Forecast

Today

Thickening clouds, cold, a little light rain, sleet and/or snow possible at times, highs in the upper 30’s

Tonight

Cloudy with steady rain developing near midnight, possibly mixed with sleet and/or snow at the onset, cold, lows in the low-to-mid 30's

Tuesday

Cloudy and windy with periods of rain, heavy at times, cold, near 40 degrees

Tuesday Night

Cloudy and windy with rain mixing with and then changing to snow, precipitation can be heavy at times, cold, low 30’s

Wednesday

Mostly cloudy with the chance for some snow or snow and rain mixed, perhaps even a heavier snow squall, windy, cold, upper 30’s

Thursday

Considerable clouds, breezy, cold, chance for snow showers, perhaps even a heavier snow squall, mid-to-upper 30’s

Friday

Partly sunny, cold, near 40 degrees

Saturday

Partly sunny, chilly, low 40’s

Discussion

A major storm will ride slowly up the coast over the next few days and it will bring nasty weather to much of the northeast part of the country ranging from heavy rain and wind in coastal areas to significant, accumulating snow in inland, higher elevation locations. A dome of high pressure extending from the Northern Plains to eastern Canada will inhibit this developing coastal storm from moving quickly up the coastline and this will lead to a prolonged period of heavy precipitation throughout much of the Northeast US. In fact, the storm is likely to stall out or even take a loop after it reaches the Long Island or southern New England region Tuesday night as it's movement will be stymied by stubborn blocking high pressure.

An area of "ocean-effect" light precipitation has broken out across southern New Jersey in the last couple of hours thanks to persistent NE winds. As a result, don't be surprised to see a little rain, sleet or snow during the next few hours well ahead of any effects from the now unfolding coastal storm. This light precipitation is moving inland with low-level wind flow from the northeast to the southwest. The developing coastal storm will produce rainfall amounts in the immediate I-95 corridor from DC-to-NYC in the 1-3" range from tonight into tomorrow night. Coastal sections of New Jersey and Long Island could see winds gusting past 50 mph during the height of this major nor’easter on Tuesday with flooding an additional concern. The best chance for significant snowfall accumulations will extend from the mountains of northeastern Pennsylvania to interior New England where more than a foot can easily fall by later Wednesday. While rain will fall here during the height of the storm on Tuesday, in addition to any light frozen precipitation today, there can be some sleet and/or snow mixed in at the onset of the steadier precipitation later tonight, and snow or snow showers are possible during the back end of the storm from Tuesday night into Thursday.

Video

httpv://youtu.be/EPlzQ9515O0