John Homenuk

How anomalous high pressure developing over Greenland could signal the start of a cold and wintry pattern in NYC

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When it comes to the weather in the Northern Hemisphere, you’d better keep your head on a swivel. If you’re not paying close enough attention to what’s going on around you, you’ll fall behind the forecast very quickly. In this case, strong high pressure developing over Greenland will serve as a warning shot that a colder and more wintry weather pattern will arrive in NYC by mid-December.

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John Homenuk

Huge ridge developing in the Gulf of Alaska, what does it mean for us?

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Forecast models are in strong agreement that a large and anomalous ridge will develop in the Gulf of Alaska over the next few days. The resulting wave pattern in the atmosphere will lead to colder than normal air in the Rockies, Midwest and Plains states.

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Miguel Pierre

The Importance of the Stratosphere

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The behavior of the stratosphere will become increasingly important in the next 15 to 30 days. Our best understanding of the current conditions and forecast evolution suggest that the stratosphere may aid in the development of colder and wintry conditions by late December in the Northeast US. 

Winter has gotten off to a fast start. After an early November snowstorm (and transportation disaster) in the Northern Mid-Atlantic, the pattern has been steadily colder than normal. A major winter storm impacted the Lower Mid-Atlantic this week, with 1 to 2 feet of snowfall over parts of Virginia and North Carolina. After almost a month of wintry conditions, including one of the fastest starts ever for the ski regions of Vermont, the pattern finally looks likely to take a hiatus as moderating temperatures approach this weekend. 

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Miguel Pierre

Heat Builds in the Plains, Cooler Weather Persists in the Northeast

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While it’s been very warm and muggy at times, during the May and into beginning of this month, more periods of some cooler and some wetter weather have domnated over the Northeast US. Unfortunately, we don’t expect this general theme to be changing very much over next week or two. In fact, this summer isn’t looking to be very hot one for Northeast, based on our summer forecast research into analog years that feature similar pattern for the Spring months, (March to May) and current trends with a more neutral ENSO. But there might a be few changes for awhile during the middle to later part of this month.

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