* WHAT. North winds 15 to 20 kt with gusts up to 30 kt and waves 2 to 3 feet. * WHERE. In Massachusetts coastal waters, Boston Harbor. In Rhode Island coastal waters, Narragansett Bay. * WHEN. Until 8 AM EDT Saturday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Northeast winds 15 to 20 kt with gusts up to 30 kt and waves around 3 feet. * WHERE. In Massachusetts coastal waters, Boston Harbor. In Rhode Island coastal waters, Narragansett Bay. * WHEN. Until 8 AM EDT Saturday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Northeast winds 15 to 20 kt with gusts up to 30 kt and waves around 3 feet. * WHERE. In Massachusetts coastal waters, Boston Harbor. In Rhode Island coastal waters, Narragansett Bay. * WHEN. Until 8 AM EDT Saturday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. For the High Surf Advisory, large breaking waves of 10 to 14 feet in the surf zone. For the first Coastal Flood Advisory, up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways (1.4 to 13.7 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 (3.9 to 13.3 feet Mean Lower Low Water). For the third Coastal Flood Advisory, one to two feet of inundation above ground level expected in low- lying areas near shorelines and tidal waterways (4.3 to 13.9 feet Mean Lower Low Water). For the additional Coastal Flood Advisory, one to two feet of inundation above ground level expected in low- lying areas near shorelines and tidal waterways (4.4 to 13.7 feet Mean Lower Low Water). * WHERE. Eastern Essex MA, Eastern Plymouth MA, Barnstable MA and Nantucket MA Counties. * WHEN. For the High Surf Advisory, until 7 PM EDT Saturday. For the first Coastal Flood Advisory, until 6 PM EDT this evening. For the second Coastal Flood Advisory, from 11 PM this evening to 5 AM EDT Saturday. For the third Coastal Flood Advisory, from 11 AM to 5 PM EDT Saturday. For the additional Coastal Flood Advisory, from noon to 6 PM EDT Sunday. * IMPACTS. Most roads remain passable. Flooding up to one foot deep affects coastal roads on the North Shore from Salem to Gloucester and Newburyport. Rough surf will cause flooding on some coastal roads around the time of high tide due to splashover. 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.

* WHAT. Large breaking waves of 5 to 11 feet in the surf zone. * WHERE. Washington, and Newport RI Counties. * WHEN. Until 7 PM EDT Saturday. * IMPACTS. Dangerous swimming and surfing conditions and localized beach erosion.

* WHAT. 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 (12.5 to 12.7 feet Mean Lower Low Water). For the second Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low- lying areas near shorelines and tidal waterways (12.5 to 12.6 feet Mean Lower Low Water). For the third Coastal Flood Advisory, up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (12.9 to 13.1 feet Mean Lower Low Water). For the additional Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (12.7 to 12.8 feet Mean Lower Low Water). * WHERE. Suffolk MA and Eastern Norfolk MA Counties. * WHEN. For the first Coastal Flood Advisory, until 6 PM EDT this evening. For the second Coastal Flood Advisory, from 11 PM this evening to 5 AM EDT Saturday. For the third Coastal Flood Advisory, from 11 AM to 5 PM EDT Saturday. For the additional Coastal Flood Advisory, from noon to 6 PM EDT Sunday. * IMPACTS. Shallow pockets of flooding less than one foot deep affects the lowest lying areas along the coast, including Morrissey Boulevard in Boston.

* WHAT. Large breaking waves of 5 to 9 feet in the surf zone. * WHERE. Southern Bristol MA County. * WHEN. Until 7 PM EDT Saturday. * IMPACTS. Dangerous swimming and surfing conditions and localized beach erosion.

* WHAT. For the High Surf Advisory, large breaking waves of 10 to 14 feet in the surf zone. For the first Coastal Flood Advisory, up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways (1.4 to 13.7 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 (3.9 to 13.3 feet Mean Lower Low Water). For the third Coastal Flood Advisory, one to two feet of inundation above ground level expected in low- lying areas near shorelines and tidal waterways (4.3 to 13.9 feet Mean Lower Low Water). For the additional Coastal Flood Advisory, one to two feet of inundation above ground level expected in low- lying areas near shorelines and tidal waterways (4.4 to 13.7 feet Mean Lower Low Water). * WHERE. Eastern Essex MA, Eastern Plymouth MA, Barnstable MA and Nantucket MA Counties. * WHEN. For the High Surf Advisory, until 7 PM EDT Saturday. For the first Coastal Flood Advisory, until 6 PM EDT this evening. For the second Coastal Flood Advisory, from 11 PM this evening to 5 AM EDT Saturday. For the third Coastal Flood Advisory, from 11 AM to 5 PM EDT Saturday. For the additional Coastal Flood Advisory, from noon to 6 PM EDT Sunday. * IMPACTS. Most roads remain passable. Flooding up to one foot deep affects coastal roads on the North Shore from Salem to Gloucester and Newburyport. Rough surf will cause flooding on some coastal roads around the time of high tide due to splashover. 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.