Posts

John Homenuk

Significant winter storm set to affect the Northeast on Wednesday

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A powerful storm system is expected to evolve over the next few days in the Northeast states – the second in just under a week – as a strong disturbance drives southeastward from the Great Lakes and forces a powerful coastal low to develop offshore. Forecast models have trended stronger, deeper, and slower with the track of the storm, and as a result the impacts of the system are expected to be significant.

Impacts are expected to begin across the Mid Atlantic and Northeast states as early as tonight, with snow spreading northward along a frontal boundary as moisture begins to surge northward as well. But the main event will come on Wednesday morning, as impressive atmospheric dynamics reach the coast and touch off the rapid development of a low pressure system. This will send bands of very heavy snow inland through NJ, NY, PA, and CT, with significant snowfall accumulations and widespread travel impacts.

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John Homenuk

Winter storm expected in the Northeast tonight, moderate accumulations likely

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A winter storm will approach the Northeast states this evening, beginning first in the Mid-Atlantic states and gradually approaching from the southwest towards New England. The storm system is developing on the heels of a frontal boundary that crossed the Northeast states on Friday evening and Saturday morning (you may have noticed it’s a bit colder outside) and that frontal zone will serve as a highway for the development of low pressure.

In the atmosphere’s mid levels, the system remains somewhat progressive – in other words, this is not a huge, powerful Nor’Easter. But there is plenty of moisture, aided by a strong low level jet stream, and that will act to enhance precipitation rates as the storm moves by. There are still a few uncertainties remaining with the system:

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John Homenuk

Snowstorm increasingly likely in the Northeast this weekend

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Good morning and Happy Friday! As many of us in the Northeast, and especially the Northern Mid Atlantic, make our way to work without a heavy jacket for the first time in what seems like months, the atmosphere is already undergoing a significant transition. Warm, humid air is entrenched in the region right now and a disturbance passed by overnight leading to heavy rain (and severe thunderstorms in parts of Pennsylvania, where it is believed a tornado touched down in Uniontown last night). A frontal boundary approaches and slides towards the coast later this evening.

Lurking back to the west is another disturbance which will emanate from the Pacific and track across the United States, ending in the Ohio Valley and Northeast states late Saturday into Sunday. The frontal boundary will have sunk southward towards the Mid-Atlantic Coast, allowing cold air to filter back in. And when the disturbance approaches this front, the temperature gradient will promote the development of low pressure. Increasing lift will lead to the expansion of precipitation – likely in the form as snow for many areas.

The low pressure will develop off the coast late Saturday Night with snow spreading northward, from the Washington DC Area towards Philadelphia and then eventually New York City. There are several uncertainties that still remain:

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Miguel Pierre

Tuesday Briefing: Northeast Snow This Weekend Before Big Warmth Next Week?

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Good afternoon! Overall the pattern will continue to be progressive until at least Friday. Canadian high pressure will provide mostly sunny skies for rest of today. Temperatures  are rising into the mid-upper 30s. Which is few degrees below normal. But the next few days will start see temperature moderate again, as southerly flow develops again. High temperatures on Wednesday will be in the mid-upper 40s. Then highs and Thursday and Friday will be the 50s or 60s, depending on amount of cloud cover.

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