* WHAT. For the High Surf Advisory, large breaking waves of 4 to 9 feet in the surf zone. For the Beach Hazards Statement, dangerous rip currents, large breaking waves expected, and strong longshore currents in the surf zone. For the Coastal Flood Advisory, 1 to 2 feet of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE. .For the High Surf advisory, the beaches north of Cape Hatteras. For the Beach Hazards Statement, all Hatteras Island beaches. For the Coastal Flood Advisory, oceanside areas of Hatteras Island. * WHEN. For the High Surf Advisory, until midnight EDT tonight. For the Beach Hazards Statement, through this evening. For the Coastal Flood Advisory, from 2 PM this afternoon to 8 PM EDT this evening. * IMPACTS. A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. Dangerous shore break can throw a swimmer or surfer head first into the bottom causing neck and back injuries. Strong longshore currents will create dangerous swimming conditions. * ADDITIONAL DETAILS. The most likely time for strong rip currents to occur is a couple hours either side of low tide, which will occur around 9:00 AM this morning..