Im Andrea Mitchell in washington. With the new details of the storm barreling towards the atlantic coast, florence is a category 4 hurricane, and the latest update from the National Hurricane center says it is on a collision course with the carolinas. So far the governors in north and South Carolina and virginia and maryland all declaring states of emergency. A massive evacuation is under way. More than 1 million residents and tourists are expected to flee the coastal areas ahead of a powerful storm surge anticipated over the next few days. This is still a very dangerous storm. We must take it very seriously. The weatherman here and others are all predicting that this is a unpredictable storm. We must be vigilant. We are in a very deadly and important game of chess with hurricane florence. Joining me now is msnbcs Marianna Atencio along the North Carolina coast, and msnbc michelle grossman, and michelle, first to you, and looking at the storm track, and what are we preparing to, and th