* WHAT. Up to one foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. From 3 AM to 10 AM EDT Thursday, especially around the time of high tide. * IMPACTS. At 3.0 feet, Compromise Street begins to flood in Annapolis. Flooding of much of the City Dock parking lot is occurring. * ADDITIONAL DETAILS. Tides one to one and a half feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 5:58 AM.

* WHAT. Up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE. Shoreline in St. Marys County. * WHEN. Until 5 AM EDT Thursday, especially around the time of high tide. * IMPACTS. At 3.0 feet, yards are flooded on Saint George Island, and water will begin covering the road leading to the island, especially if there is wave action. * ADDITIONAL DETAILS. Tides one to one and a half feet above normal. The next high tide at Coltons Point is at 3:02 AM. The next high tide at Point Lookout is at 1:43 AM. The next high tide at Piney Point is at 2:26 AM.

* WHAT. Up to one foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE. Shoreline in the District of Columbia. * WHEN. From 7 AM to 11 AM EDT Thursday, 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. The next high tide at Washington Channel is at 8:20 AM.

* WHAT. South winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE. Chesapeake Bay from Sandy Point MD to Drum Point MD, Tidal Potomac from Cobb Island MD to Smith Point VA, Eastern Bay, and Choptank River to Cambridge MD and the Little Choptank River. * WHEN. Until noon EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE. Westmoreland, Richmond, Northumberland, Lancaster, Middlesex and Eastern Essex Counties. * WHEN. From 10 PM EDT this evening through late tonight. * IMPACTS. Shallow flooding is possible in the most vulnerable locations near the waterfront and shoreline.