850 frontogenesis might be the cold front pressing down. Check out the wind barbs over MD and WV panhandle compared to central VA. Watch this area closely for a deathbed to set up.
Get clocked Christmas Day. We wake up to an amber sunrise that leads to a steel grey sky. Just after lunch snow starts falling and it's a solid 8" - 12" of cold powder that ends just before midnight. Then on New Year's Ever we get a nice clipper running along I-64 that put another 4" - 6" of sugar on top.
Looks like the GFS/Euro/Ukmet try to tee up Dec 9th as well. This would coincide with the MJO entering Phase 8, the PNA shifting slightly positive, and the NAO shifting slightly negative as well.