This particular frame from the euro gives me hope. It tries to stay frozen not far from D.C. almost up to the end of the precip. With these dynamics from this map, would that imply sleet?
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Perhaps the pattern relaxes for December 5th? The mjo is hinting at circling through the warm phases to begin December. But that could be a very good sign for phase 7 just in time for Christmas if it does the full swing!