If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.

* WHAT...For the High Surf Advisory, large breaking waves of 7 to 11 feet in the surf zone. For the first Coastal Flood Advisory, up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (1.3 to 12.9 feet Mean Lower Low Water). For the second Coastal Flood Advisory, up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (3.4 to 13.3 feet Mean Lower Low Water). * WHERE...Eastern Essex MA, Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA Counties. * WHEN...For the High Surf Advisory, until 8 PM EDT Sunday. For the first Coastal Flood Advisory, until 5 PM EDT this afternoon. For the second Coastal Flood Advisory, from noon to 6 PM EDT Sunday. * IMPACTS...Roads remain passable. Shallow pockets of flooding less than one foot deep affect more vulnerable coastal roads along the North Shore from Salem and Gloucester to Newburyport. Rough surf will likely cause some splashover onto coastal roads around the time of high tide. Roads remain passable. Low lying areas and roads near Nantucket Harbor, including Easy Street, may experience pockets of shallow flooding less than one foot deep. Dangerous swimming and surfing conditions and localized beach erosion.