HISTORIC NAO & NE 2020

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This picture was taken by me May 9, 2020 at Whitcomb Hill Summit, Mohawk Trail - Route 2 Florida, MA., during an amplified winter-like weather pattern known as the negative phase of the North Atlantic Oscillation (NAO). This pattern prevailed for much of May 2020. The negative NAO is a high latitude block of atmospheric pressure that becomes established around southern Greenland in the North Atlantic; that blocks the jet-stream (upper-air flow) from moving straight west-to-east, sending air of polar origin into the eastern U.S. (northeastern U.S. / New England), along with increased potential of coastal storms... 'Nor'easters'. Historically, the average phase of the NAO during the month of May, is a direct correlation to the average phase of the NAO observed during the upcoming winter season. Forecaster: Daniel Viens, establishing author of New England NAO.