* WHAT. Up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE. Shoreline in the District of Columbia. * WHEN. Until 8 AM EDT Saturday, especially around the time of high tide. * IMPACTS. Shoreline inundation is expected along portions of the seawall adjacent to Ohio Drive and the Hains Point Loop Road, and near the Tidal Basin and Jefferson Memorial. * ADDITIONAL DETAILS. Tides one to one and a half feet above normal. High tide at Washington Channel is at 4:40 PM this afternoon and 5:14 AM early Saturday morning.

* WHAT. For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. For the Coastal Flood Watch, up to one foot of inundation above ground level possible in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. For the Coastal Flood Advisory, from midnight tonight to 5 PM EDT Saturday, especially around the time of high tide. For the Coastal Flood Watch, from late Saturday night through Sunday morning, especially around the time of high tide. * IMPACTS. At 3.2 feet, water begins to approach businesses on Dock Street in Annapolis. The City Dock parking lot is flooded. Compromise Street is flooded. * ADDITIONAL DETAILS. Tides one and a half to two feet above normal. High tide at Annapolis U.S. Naval Academy is at 2:35 AM overnight, 2:47 PM Saturday afternoon, and 3:34 AM overnight Saturday night.

* WHAT. For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. For the Coastal Flood Watch, up to one foot of inundation above ground level possible in low lying areas due to tidal flooding. * WHERE. Shoreline in St. Mary's County. * WHEN. For the Coastal Flood Advisory, from 9 PM this evening to 2 PM EDT Saturday, especially around the time of high tide. For the Coastal Flood Watch, from Saturday evening through Sunday morning, especially around the time of high tide. * IMPACTS. At 3.5 feet, water covers roads on Saint George Island, is in yards, and is approaching structures. To the east, inundation is occurring at multiple marinas off St. Mary's River, Smith Creek, and Jutland Creek. * ADDITIONAL DETAILS. Tides one and a half to two feet above normal. High tide at Piney Point is at 11:20 PM this evening, 11:50 AM Saturday morning, and 12:15 AM overnight Saturday night. High tide at Point Lookout is at 10:24 PM this evening, 10:47 AM Saturday morning, and 11:22 PM Saturday evening. High tide at Coltons Point is at 11:56 PM this evening, 12:26 PM Saturday afternoon, and 12:51 AM overnight Saturday night.

* WHAT. Up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE. In Maryland, Dorchester County. In Virginia, Westmoreland, Northumberland, Lancaster, Middlesex and Mathews Counties. * WHEN. Tides will build overnight and into Saturday with some location approaching minor flood levels Saturday afternoon especially at Bishops Heads and potenially Lewisetta. * IMPACTS. Shallow flooding is possible in the most vulnerable locations near the waterfront and shoreline.

* WHAT. East winds around 10 kt with gusts up to 20 kt. * WHERE. Tidal Potomac from Key Bridge to Indian Head MD. * WHEN. Until midnight EDT tonight. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. East winds 10 to 15 with gusts up to 20 kt. * WHERE. Tidal Potomac from Indian Head to Cobb Island MD. * WHEN. For the first Small Craft Advisory, until midnight EDT tonight. For the second Small Craft Advisory, from 6 PM Saturday to 6 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. East winds 10 to 20 kt with gusts up to 25 kt. * WHERE. Chesapeake Bay and adjoining estuaries north of Smith Point VA, and Tidal Potomac from Cobb Island MD to Smith Point VA. * WHEN. Until 6 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.