The 18 Z NAM was the first to show a colder solution out at 84 hours....which it continued its trend from 12 Z. The 18 Z GFS as is also up above with the temperatures also is trending colder...
When we go out to the second event this is where my concern comes in....Above is also the temps for hours 132-138..the trend here on the GFS is also colder....
As you can see between 132-138 some quite heavy precipitation moves in with temperatures at or below freezing in the NW burbs of Philadelphia..This is setting up for a potential icestorm. Will update once again after the 00z runs....
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