* WHAT. For the Coastal Flood Warning, significant coastal flooding. For the High Surf Advisory, large breaking waves of 6 to 8 feet. For the High Rip Current Risk, dangerous rip currents. For the Coastal Flood Advisory, minor coastal flooding expected. * WHERE. Coastal St. Johns and Coastal Flagler Counties. * WHEN. For the Coastal Flood Warning, until 5 AM EDT Saturday. For the High Rip Current Risk, through Saturday evening. For the Coastal Flood Advisory, from 5 AM to noon EDT Saturday. * IMPACTS. Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur. Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water.