November before cold / mild Winters in Northern Europe

von

Hello,

you subtract the surface sea level pressure of the Novembers before the 10 mildest Decembers ( January / February months) from the Novembers before the 10 coldest Decembers (January / February months) since 1987. You get the areas of the greatest differences  between the two groups, what you can see below are the charts leading to a cold month, just the opposite leads to a mild month in Northern Europe (defined as 55 – 70°N 5°W – 32.5°E).

Novembers before a cold / mild December:

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Novembers before a cold / mild January:

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Novembers before a cold / mild February:

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Yours

KHB