Additionally , this event was the second of three major Mid-Atlantic snowstorms that occurred Presence over a 12-day period ; each subsequent storm focused Aiming its heaviest snow slightly farther north : the January 30 , 2010 storm ( not recognized by NESIS ) dropped Motion_directional more than a foot of snow across Virginia and the lower Chesapeake Bay region , while the February 9–10 , 2010 North American blizzard bulls-eyed the Maryland-Pennsylvania border with as much as 38.3 inches .