Not positive?
He posted on facebook late last night.
Wxrisk.com
New developments about XMAS even rain to snow threat for eastern US AND strong indications or most favorable winter storm upper air pattern showing for Mid atlantic Ohio valley New England regions on DEC 29-30 and JAN 2-3 that I have seen since Jan 1996 H.E.C.S. Historic East coast snowstorm
https://www.facebook.com/WxRisk/