Coastal Flood Advisory

* WHAT...For the High Surf Advisory, large breaking waves of 8 to 11 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. For the Coastal Flood Watch, one to two feet of inundation above ground level possible in vulnerable areas near the waterfront and shoreline.

* WHERE...Southwest Suffolk County.

* WHEN...For the High Surf Advisory, until 8 PM EDT Saturday. For the High Rip Current Risk, through Saturday evening. For the Coastal Flood Advisory, until noon EDT Friday. For the Coastal Flood Watch, from Friday afternoon through Saturday morning.

* IMPACTS...Late Friday afternoon into early Saturday, widespread flooding of vulnerable areas near the waterfront and shoreline, including roads, parking lots, parks, lawns, and homes and businesses with basements near the waterfront. Numerous road closures are likely, and vehicles parked in vulnerable areas near the waterfront will likely become flooded. Flooding will also extend inland from the waterfront along tidal rivers and bays. Through Saturday early evening, dangerous swimming and surfing conditions and localized beach erosion. Life-threatening rip currents are likely for all people entering the surf zone. Anyone visiting the beaches should stay out of the surf. Rip currents can sweep even the best swimmers away from shore into deeper water.

* ADDITIONAL DETAILS...Beach flooding and erosion likely Friday into Saturday.