US: Cross model agreement… Arctic floodgates open just in time for Christmas!

While models can still do a 360 10 days out, it looks pretty much a lock that we’ve cold diving south in time for Christmas. All the models show the same solution with predominantly mild this week. The question is how cold once we reach Christmas?

GFS ensemble shows significant warmth across the board mid week but MUCH colder by Christmas Eve/Day.

TUE AM

Credit: Tropical Tidbits

CHRISTMAS AM

Credit: Tropical Tidbits

ECMWF 850mb temp anomaly is even more impressive tomorrow morning vs Christmas morning.

Credit: Tropical Tidbits

Credit: Tropical Tidbits

CFSv2 weeklies also on board with warm front running 7 followed by very different following 7.

Credit: Tropical Tidbits

Credit: Tropical Tidbits

It remains cold week 3 which takes us into January and then interestingly the pattern breaks mid January.

Credit: Tropical Tidbits

Credit: Tropical Tidbits

GFS snow through 240 hrs

Credit: Tropical Tidbits

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