* WHAT. For the Coastal Flood Advisory, one to two feet of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the High Rip Current Risk, dangerous rip currents expected. * WHERE. Coastal Ocean. * WHEN. For the Coastal Flood Advisory, until 3 PM EDT Friday. For the High Rip Current Risk, from Friday morning through Friday evening. * IMPACTS. At this level, widespread roadway flooding occurs in coastal and bayside communities and along inland tidal waterways. Many roads become impassable. Some damage to vulnerable structures may begin to occur. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS. A least minor coastal flooding is anticipated with the high tide cycle Friday morning; some guidance indicates moderate coastal flooding may be possible during this high tide cycle. At least minor coastal flooding may continue into the weekend with following high tide cycles.