Six inches of heavy, wet snow is coming to Philadelphia and other areas could see even more accumulation. It comes just one week after an ice storm left thousands without power. NBC10 has more: "Here we go again," said NBC10 First Alert Weather Chief Meteorologist Glenn “Hurricane” Schwartz as he poured over the latest forecast data in the First Alert Weather Center. Two weather systems – one from the Pacific Northwest and another from the Gulf Coast – are moving east and will merge to…