As with all area along the Eastern Seaboard, south of New York City, elevation will not save them from a dunking unless they are close to 1,000 feet in elevation and several hundred miles from the coast. The coastline will be pulled down several hundred feet just prior to continental rip, which will rent the deep Atlantic Ocean rifts further apart. The permanent effect on the coastline along the southern portion of the US will be a drop of 150 feet, below its former level. For residents unprepared for this, the rise is sea level will be steady, not a wave as in a tidal wave, and will be completely confusing to those unaware of the coming changes. The water will simply rise up to their feet and then over their heads, steadily. Those in the foothills of the Appalachian Mountains may find their toes only wet, but for safety, go to higher ground and return home after the shift.