this threat of a powerful nor easter. winter storm watches up tonight from north carolina all the way up through massachusetts at this hour. this will bring snow, coastal flooding and wind gusts up to 65 miles an hour. though it's still not clear just how far inland this will strike. it will also make a big difference on snow amounts. but from philadelphia up through new york, boston, all bracing tonight for all scenarios. senior meteorologist rob marciano live in boston with the latest tracks for us. rob? >> reporter: hey, david. we're getting more confident that we're going to see some big snow amounts with this potentially explosive storm. so, wind's going to be an issue, as well. you mentioned the watches. the center of this low is still down by florida, it's going to take shape tonight and it will really start to be on the coast of the carolinas tomorrow night. snow spreading from richmond, redevelopment by saturday morni. the winds pick up. snow spreads from philly to new york to hartford and winds crank tomorrow afternoon, 50, 60, 70 miles an hour.