Snow is already falling across the country all the way from Houston, Texas to State College Pennsylvania at this hour as a large, strung out storm system marches towards the east coast. This is the second unusual snow event in the Gulf Coast and Deep South this Winter. This storm includes Florida, which will see it’s third snowfall of the year tonight. As our original low pressure well to the north begins to weaken, a second area of low pressure will form off the New Jersey coastline, and bring heavier snows from northern New Jersey through much of southern New England, including cities such as Albany, Hartford, Boston and Concord.

Already we’re seeing signs of our developing coastal low offshore, and as that low continues to strengthen, the light fluffy snow currently falling with become heavier and accumulate higher totals. This worst of the storm will likely hit southern New England late tonight and into tomorrow morning and afternoon.

With the storm now underway, we’ve expanded our final snowfall map slightly to show  the heavier totals as well as lower accumulations along the immediate coastline. Without a fresh cold air source and a low forming so close to the coastline, places stretching from Delaware to coastal New Jersey to Long Island and southeastern Massachusetts will greatly struggle with mixed precipitation and rain. As the storm moves further away however, we do expect some of that mixed bag to turn over to all snow.

The “hot-spot” for this system will stretch from the Poconos through the Berkshires and into coastal Maine, where we expect anywhere from 5-8 inches of snowfall. Locally higher amounts, especially across the higher elevations, will be possible. Expanding out a bit, we have quite a large swath where 3-5 inches of snowfall can be expected, stretching back towards Central Pennsylvania and into extreme southern New England and Boston away from the immediate shoreline. Northern suburbs of Baltimore through Philadelphia and New York City should be able to squeeze out a quick inch or two from this system as well.

A second “hot-spot” will also be found well to the south across southern Virginia and into North Carolina, where up to 5 inches of snowfall will be possible as our storm jets away. The Delmarva region shouldn’t get much out of this, however.

In terms of when the snow and rain will start, we outline general start times above. Keep in mind precipitation may vary and could be sped up or delayed by an hour or so. This system is slow moving up until our coastal low fully develops, so rain and snow will inch east-bound over the next 24 hours and then hurry on out.

The major I-95 cities will begin to get in on the action overnight tonight and into the early hours of tomorrow morning, while areas just to the north and west will begin to see flakes fly as early as this evening.

By tomorrow late afternoon and overnight, the majority of the storm will be out of the region, with a brief cold shot to follow. By the weekend, things warm up and much of the snow near the coastline begins to melt. Stay tuned.


Scott is the founder and CEO of WeatherOptics Inc, which he started as a weather forecasting content platform in 2010. In 2016, after gaining a substantial following, WeatherOptics began servicing the private sector using impact analytics driven by historical weather data. Since this pivot, Pecoriello has led the effort to combine consumer, business, utility, and weather data in order to redefine how WeatherOptics could change business perspective on the weather. As founder as well as the director of all day to day operations, Pecoriello has proven WeatherOptics to be an effective, fast-growing data analytics company that is actively changing the way businesses think and react to the weather.

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