Collier County graphicCOLLIER COUNTY EMERGENCY MANAGEMENT

Storm Surge and 'SLOSH'

Storm Surge:  An abnormal rise in sea level accompanying a hurricane or other intense storm, and whose height is the difference between the observed level of the sea surface and the level that would have occurred in the absence of the cyclone. Storm surge is usually estimated by subtracting the normal or astronomic high tide from the observed storm tide.

Storm Tide:  The actual level of sea water resulting from the astronomic tide combined with the storm surge. To see the current tide timetable for a particular area, go to this site.