NEW : Centered 470 miles from New York , Sandy 's hurricane force winds extend 175 miles . Millions of people will experience flooding and power outages due to the storm . Even with its eye still hundreds of miles away , those on the North Carolina , Virginia and Maryland coasts felt its wrath Sunday . Boston 's Metro joins New York and Philadelphia in suspending subway runs . ` ` It could be bad , or it could be devastation , '' a Coast Guard official says .
NEW : Centered 470 miles from New York , Sandy 's hurricane force winds extend 175 miles . Millions of people will experience flooding and power outages due to the storm . Boston 's Metro joins New York and Philadelphia in suspending subway runs . ` ` It could be bad , or it could be devastation , '' a Coast Guard official says .