arctic blast to start 2010

 The main headline for the eastern United States will be a very strong arctic airmass which will dominate the weather pattern for at least the next week. Expect highs in the mid to upper 20’s and lows in the 10’s each day with blustery nw winds. This period of expected extreme cold over 10*F below normal will likely be one of longest in recent memory for the mid-south. Teleconnections wise this is set-up by a negative nao, ao, and epo. Also weak disturbances in the flow may lead to some scattered flurries and light snow from time to time.

nao values

ao values

epo values

Some southern energy may finally become involved by the end of next week with an impulse coming out of the pacific northwest. The end result very well could be low pressure traveling across the south with plenty of cold air in place. This is a very good set-up for a decent snowfall in the mid-south region.  Here’s a quick look at the 00z gfs.

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One Response to arctic blast to start 2010

  1. mitchell.gaines673 says:

    first decent accumlating snow of the season looks likely on thursday the question is how much.

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