The last GFS (American) model shows Matthew riding the coast from Melbourne, FL up to Hilton Head, SC. At which point it comes off the coast and loops back to hit Miami. The Canadian Model shows a similar track, although it doesn't have it coming back to hit Miami. It only has it turning off the coast stalled out just NE of the Bahamas. In the short term, we are talking Friday morning possible landfall, and it won't be moving away from the area until Sunday, so we are looking at 48 hours of the whole SE coast being affected. Not a good situation especially if it doesn't make official landfall and the eye is over water, which doesn't weaken the storm and has a chance for intensification (sp?/ is this a word? I'm a scientist not an English major). Best case is actually making landfall (backward thinking I know) which would weaken the storm and hopefully change the track and allow other forces move it away from doing more damage.
I will be tracking it through the day today and into tonight. I have a Funeral Friday morning, but will continue to monitor when I get back home. I also have a friend in SC emergency management so if I hear anything of note from her, I will pass it along. Stay safe, move to higher ground, don't drive through water covered roads. 6" of quick moving water is all it takes to knock a person off their feet. Keep those phones charged, and have some battery backups!