According to The Weather Channel:
Hurricane Matthew will significantly impact the southeastern United States coastline late this week into the weekend. All interests from Florida to coastal Georgia and the Carolinas should continue to monitor the forecast closely and make necessary preparations for a hurricane. Those in eastern Florida should make those preparations as soon as possible.
The NHC forecast calls for Matthew to be a strong hurricane during this timeframe.
Florida Peninsula (particularly east): Thursday-Friday, possibly lingering into early Saturday in northeast Florida.
Southeast Georgia: Friday-Saturday.
Eastern Carolinas: Later Friday-Saturday, possibly continuing into Sunday.
Read more and view map path projected by National Hurricane Center’s (NHC) visit: