Colder weather moves in

Good Thursday to one and all. December is off and running with much colder air pushing into the region. This is the beginning of what looks to be a much colder than normal month shaping up for much of the country.

Highs Thursday and Friday will generally range from 40 to 45 degrees, with overnight lows dropping into the upper 20s and low 30s. There will be just a small amount of moisture that can creep into the northern and eastern parts of the region. This could bring a few sprinkles or snowflakes into those regions.

The GFS shows where it thinks a few flakes are possible through Friday:

gfs

The next system will come at us in two waves. The first arrives Saturday night and Sunday, with some light precipitation. This could start in the form of some rain, sleet or snow. The GFS gives much of the state a chance at seeing the mix:

gfs-3

The main part of the storm will then come at us late Monday and Tuesday. That should bring another round of heavy rain:

gfs-5

A true arctic front is likely to follow that by late Wednesday and Thursday. This is likely to be accompanied by a big storm system, with a secondary low trying to develop somewhere along that boundary as it swings through here.

The Canadian goes wild with that setup:

canadian

For fun, here’s the snowfall forecast from that particular run:

canadian

The chances for snow will be figured out as we get closer, but the amount of arctic air diving into the country is impressive:

euro

Overall, the very cold signal continues to show up on the ensembles for December. Watch out for the air across the country.

Have a great day and take care.

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