Folks in the Eastern third of the nation that have grown rather complacent after the relatively mild winter thus far are in for a surprise to start off the new year. The latest run of the ECMWF model is shown below, valid 7am EST on Tuesday morning, January 3rd. The left half of the image is the middle and upper level depiction of the weather, with the right half being the surface level:
I've drawn in the position of the jet stream (yellow line/arrow) and the surface cold frontal position on the same image below:
If the above model verifies, which it is on track to do, then bitterly cold air will grip much of New England and the Northeast early next week. Sharply colder temperatures are likely over the Southeast as well, including a possible hard freeze well into Northern and possibly even central Florida on Tuesday and/or Wednesday mornings.
It does appear that the cold shot will be relatively brief, with near (to possibly even above) normal temperatures returning to much of the region during the 2nd half of the week.
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