The coordinates are near downtown Orlando, maybe just SE a tad, the 120 hours is relative to the time of the forecast (Makes it late Saturday) and is based upon current and forecast speed. Errors noted say the distance can be a few hundred miles off by Saturday (Mia to Jax) and the top speed could be off by quite a bit also. Timing assumes speed is as predicted so could get here much earlier or possibly later. Bottom line, pay extra attention to this forecast, but be prepared for significant changes also....start your preparations now and be ready to take evasive action if required by Friday. Other than moving to safety if that is needed, you should already have your supplies and plans firmed up or completed.