Hurricane Frederic tidal floods of September 12-13, 1979, along the Gulf Coast, West Pensacola quadrangle, Florida

Shown on the West Pensacola topographic map are floodmarks elevations left by Hurricane Frederic tides of September 12-13, 1979, along the eastern shore of Perdido Bay in the vicinity of West Pensacola, Florida. Most of the damage in this area was due to minor flooding and high winds. Still water elevations ranged from about 5 feet above National Geodetic Vertical Datum in the sheltered areas to about 7.5 feet in areas subject to wind setup. Storm-tide frequency and records of annual maximum tides at Mobile, Alabama, since 1772, are presented. Offshore winds reached about 160 miles per hour. A wind-velocity of about 145 miles per hour was recorded near Dauphin Island, Alabama. (USGS)