November before cold / mild Winters in the USA (East)

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 the east of the USA (defined as 30 – 50°N 95 – 65°W).

Novembers before a cold / mild December:

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Novembers before a cold / mild January:

6naczvalnd

Novembers before a cold / mild February:

t_idiabrux

Yours

KHB

November before cold / mild Winters in the USA (West)

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 the west of the USA (defined as 30 – 50°N 125 – 95°W).

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:

c68mqfykro

…………in Alaska

 

Novembers before a cold / mild December in Alaska:

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Novembers before a cold / mild January:slw6e63gjb

Novembers before a cold / mild February:

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Yours

KHB