A deep upper level trough will move to the east coast this weekend and, as a result, cold air will plunge all the way down into the Deep South perhaps causing a freeze in Florida.  There are multiple upper-level jet streaks (Arctic, polar, sub-tropical) on the playing field associated with this developing long wave upper level trough and they will quite likely phase together to generate a storm near the US east coast this weekend.  Given the complexity of the developing situation, it is no doubt the computer forecast models are not all in the same camp.  The latest UKMET, Canadian and JMA models are still rather bullish on coastal storm prospects for the weekend, the Euro is a close call, and the GFS is currently leaning against the idea.  Bottom line, it is too early to write off the possibility for an important weekend coastal storm that could affect the Northeast and Mid-Atlantic.

Paul Dorian/Meteorologist

The SI Organization, Inc.

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