Right now Jeanne is approximately 170mi east of West Palm Beach. If she kept heading on a due west path(which isn't the official NHC forecast right now) she would come ashore in South Florida in about 12hrs, or around 10PM. I'm guessing that they have her slowing a bit and heading more WNW, and that's why they don't have landfall until about 2AM. But everyone needs to watch this storm closely as any increase in forward speed would move up the timetable for landfall. Hopefully everyone on the east coast of Florida has already made their plans and is either in the process of executing them or is planning to.