Merry Christmas!

It sure has been a mild Christmas for the East Coast with highs reaching 64 at Newark, 62 in Central Park, NYC which were both the 3rd warmest Christmas Day on record while it reached 59 all the way to Boston.

59 in Boston is 2nd warmest in the last 50 years.

In contrast it’s been a snowy Christmas through the Rockies into the western Plains thanks to a storm system pushing through but while there’s a trough Out West, there’s a ridge further east driving unseasonably mild air up from the far south into the Northeast.

It sure has been a mild December.

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Here’s current US snow cover.

A massive change is coming! ARCTIC air looks likely to dominate the upcoming US pattern as we enter the heart of winter.

GFS operational 7-day MEAN 2-metre temp anomaly.

I like what the CFSv2 is showing for January. Note the northern blocking with core over Alaska.

700mb

 

850 temp anomaly 2 metre temp anomaly

2-metre temp anomaly

More detail tomorrow.

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