The storm is moving off the East Coast pulling arctic air across the Great lakes into the Mid Atlantic States. Temperatures will only reach the single digits and lower teens this afternoon. The air mass will begin to moderate over the weekend on the backside of high pressure migrating off the coast. Another storm system is expected to hit late Sunday into Monday. Some of the coldest air in nearly 2 decades will invade the region behind this system Tuesday into Wednesday. It will be dangerously cold for about 48 hours.