* WHAT. Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE. Westmoreland and Northumberland Counties. * WHEN. Until 5 AM EDT Friday. * IMPACTS. Shallow flooding is expected in the most vulnerable locations near the waterfront and shoreline resulting in a low threat of property damage. Expect up to one foot of water above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks and lawns near the waterfront will experience shallow flooding.

* WHAT. Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE. Westmoreland and Northumberland Counties. * WHEN. Until 5 AM EDT Friday. * IMPACTS. Shallow flooding is expected in the most vulnerable locations near the waterfront and shoreline resulting in a low threat of property damage. Expect up to one foot of water above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks and lawns near the waterfront will experience shallow flooding.

* WHAT. Up to one foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in St. Marys County. * WHEN. Until 5 PM EDT Friday, 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. The next two high tides at Coltons Point are 3:09 AM and 3:30 PM. The next two high tides at Piney Point are 2:33 AM and 2:54 PM. The next two high tides at Point Lookout are 1:30 AM and 2:00 PM.

* WHAT. Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Charles and King George Counties. * WHEN. Until 5 PM EDT Friday, especially around the time of high tide. * IMPACTS. At 3.5 feet, water reaches yards near Cobb Island and docks near Dahlgren. * ADDITIONAL DETAILS. Tides one to one and a half feet above normal. The next two high tides at Dahlgren are 3:06 AM and 3:28 PM. The next two high tides at Goose Bay are 4:19 AM and 4:40 PM.

* WHAT. Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. Until 11 PM EDT Friday, especially around the time of high tide. * IMPACTS. At 2.8 feet, flooding of some of the parking area near Dock Street in Annapolis may occur, with water surrounding the Alex Haley Memorial. * ADDITIONAL DETAILS. Tides one to one and a half feet above normal. The next two high tides at Annapolis U.S. Naval Academy are 5:34 AM and 6:07 PM.

* WHAT. Up to one foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in the District of Columbia, Arlington County, and the City of Alexandria. * WHEN. Until 11 PM EDT Friday, 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. Water is expected to approach the curb near the intersection of King Street and Strand Street in Alexandria. * ADDITIONAL DETAILS. Tides one to one and a half feet above normal. The next two high tides at Washington Channel are 8:27 AM and 8:48 PM. The next two high tides at Alexandria are 8:45 AM and 9:06 PM.

* WHAT. North winds 10 to 15 kt with gusts up to 20 kt. * WHERE. Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. Until 8 PM EDT Friday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE. Westmoreland and Northumberland Counties. * WHEN. Until 5 AM EDT early this morning. * IMPACTS. Shallow flooding is expected in the most vulnerable locations near the waterfront and shoreline resulting in a low threat of property damage. Expect up to one foot of water above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks and lawns near the waterfront will experience shallow flooding.

* WHAT. North winds 10 to 15 kt with gusts up to 20 kt. * WHERE. Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. Until 6 PM EDT Saturday. * IMPACTS. Conditions will be hazardous to small craft.