* WHAT. Flash flooding in urban areas caused by excessive rainfall is possible. * WHERE. District of Columbia. Portions of Maryland, including the following areas, Anne Arundel, Central and Southeast Howard, Central and Southeast Montgomery, Charles, Prince Georges and Southern Baltimore. Portions of Virginia, including the following areas, Arlington/Falls Church/Alexandria, Central and Southeast Prince William/Manassas/Manassas Park, Fairfax, King George, Spotsylvania and Stafford. * WHEN. From 8 PM EDT this evening through Sunday morning. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS. - As the center of Tropical Storm Ophelia moves north along or near the Interstate 95 corridor, it will produce an area of enhanced rainfall. This is expected to result in 2 to 3 inches of rain, with high end amounts of 4 inches possible. This heavy rainfall will occur in a 1 to 2 hour period, and could result in flash flooding within the urban I-95 corridor. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information

* WHAT. Flash flooding caused by excessive rainfall continues to be possible. * WHERE. District of Columbia. Portions of Maryland, including the following areas, Anne Arundel, Central and Southeast Howard, Central and Southeast Montgomery, Charles, Prince Georges, and Southern Baltimore. Portions of Virginia, including the following areas, Arlington/Falls Church/Alexandria, Central and Southeast Prince William/Manassas/Manassas Park, Fairfax, King George, Spotsylvania, and Stafford. * WHEN. Until 8 AM EDT Sunday. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS. - As the center of Ophelia moves north along or near the Interstate 95 corridor, it will produce an area of enhanced rainfall. This is expected to result in 1 to 3 inches of rain, with locally higher amounts possible. This heavy rainfall will occur in a 2 to 4 hour period, and could result in flooding or flash flooding within the urban I-95 corridor. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information

* WHAT. For the Coastal Flood Warning, one to two feet of inundation above ground level in low lying areas due to tidal flooding. For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. For the Coastal Flood Warning, until 8 AM EDT Sunday, especially around the time of high tide. For the Coastal Flood Advisory, from 8 AM to 5 PM EDT Sunday, especially around the time of high tide. * IMPACTS. At 3.5 feet, water reaches the floor of the Maritime Museum in Annapolis, begins to cover Bowyer Road on the Naval Academy campus, and numerous businesses on Dock Street are flooded, along with the City Dock parking lot. * ADDITIONAL DETAILS. Tides one and a half to two feet above normal. The next high tides at Annapolis U.S. Naval Academy are at 1:13 AM overnight and 12:28 PM Sunday afternoon.

* WHAT. For the Coastal Flood Warning, one to two feet of inundation above ground level in low lying areas due to tidal flooding. For the Coastal Flood Advisory, 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, Arlington County, and the City of Alexandria. * WHEN. For the Coastal Flood Warning, until 7 AM EDT Sunday, especially around the time of high tide. For the Coastal Flood Advisory, from 7 AM to 6 PM EDT Sunday, especially around the time of high tide. * IMPACTS. The unprotected area on the Southwest Waterfront at the DC Seafood Market is expected to flood. Water is expected to approach parts of the Hains Point Loop Road, but it will likely be closed. Water is expected to approach buildings near King Street and Union Street. * ADDITIONAL DETAILS. Tides one and a half to two feet above normal. The next high tides at Alexandria are at 3:27 AM early Sunday morning and 4:22 PM Sunday afternoon. The next high tides at Washington Channel are at 3:09 AM early Sunday morning and 4:04 PM Sunday afternoon.

* WHAT. Up to one foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Calvert County. * WHEN. Until 3 PM EDT Sunday, especially around the time of high tide. * IMPACTS. At 3.0 feet, water is expected to reach backyards near 9th Street in North Beach, and could approach 9th Street. At 3.5 feet, yards are flooded near Charles Street and Williams Street in Solomons. Nearby parking lots and the streets themselves are covered by more than a half foot of water. * ADDITIONAL DETAILS. Tides two to two and a half feet above normal. The next high tide at Solomons Island is at 9:41 AM Sunday morning. The next high tide at Chesapeake Beach is at 11:40 AM Sunday morning.

* WHAT. Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Prince Georges County MD, and Fairfax, Stafford, and southeastern Prince William Counties in VA. * WHEN. Until 5 AM EDT Sunday, especially around the time of high tide. * IMPACTS. Flooding of lots, parks, and roads with only isolated road closures expected.

* WHAT. Around one foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Charles and King George Counties. * WHEN. Until 2 PM EDT Sunday, 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 two to two and a half feet above normal. The next high tide at Dahlgren is at 10:33 AM Sunday morning. The next high tides at Indian Head are at 2:55 AM overnight and 3:50 PM Sunday afternoon. The next high tide at Goose Bay is at 11:56 AM Sunday morning.

* WHAT. For the Coastal Flood Warning, one to two feet of inundation above ground level in low lying areas due to tidal flooding. For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. For the Coastal Flood Warning, until 8 AM EDT Sunday, especially around the time of high tide. For the Coastal Flood Advisory, from 8 AM to 5 PM EDT Sunday, especially around the time of high tide. * IMPACTS. At 3.5 feet, water reaches the floor of the Maritime Museum in Annapolis, begins to cover Bowyer Road on the Naval Academy campus, and numerous businesses on Dock Street are flooded, along with the City Dock parking lot. * ADDITIONAL DETAILS. Tides one and a half to two feet above normal. The next high tides at Annapolis U.S. Naval Academy are at 1:13 AM overnight and 12:28 PM Sunday afternoon.

* WHAT. Around one foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Charles and King George Counties. * WHEN. Until 2 PM EDT Sunday, 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 two to two and a half feet above normal. The next high tide at Dahlgren is at 10:33 AM Sunday morning. The next high tides at Indian Head are at 2:55 AM overnight and 3:50 PM Sunday afternoon. The next high tide at Goose Bay is at 11:56 AM Sunday morning.

* WHAT. Up to one foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Calvert County. * WHEN. Until 3 PM EDT Sunday, especially around the time of high tide. * IMPACTS. At 3.0 feet, water is expected to reach backyards near 9th Street in North Beach, and could approach 9th Street. At 3.5 feet, yards are flooded near Charles Street and Williams Street in Solomons. Nearby parking lots and the streets themselves are covered by more than a half foot of water. * ADDITIONAL DETAILS. Tides two to two and a half feet above normal. The next high tide at Solomons Island is at 9:41 AM Sunday morning. The next high tide at Chesapeake Beach is at 11:40 AM Sunday morning.

* WHAT. Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Prince Georges County MD, and Fairfax, Stafford, and southeastern Prince William Counties in VA. * WHEN. Until 5 AM EDT Sunday, especially around the time of high tide. * IMPACTS. Flooding of lots, parks, and roads with only isolated road closures expected.

* WHAT. For the Coastal Flood Warning, up to one half foot of inundation above ground level in low lying areas due to tidal flooding. For the Coastal Flood Advisory, 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, Arlington County, and the City of Alexandria. * WHEN. For the Coastal Flood Warning, until 7 AM EDT Sunday, especially around the time of high tide. For the Coastal Flood Advisory, from 7 AM to 6 PM EDT Sunday, especially around the time of high tide. * IMPACTS. The unprotected area on the Southwest Waterfront at the DC Seafood Market is expected to flood. Water is expected to approach parts of the Hains Point Loop Road, but it will likely be closed. Water is expected to approach buildings near King Street and Union Street. * ADDITIONAL DETAILS. Tides one and a half to two feet above normal. The next high tides at Alexandria are at 3:27 AM early Sunday morning and 4:22 PM Sunday afternoon. The next high tides at Washington Channel are at 3:09 AM early Sunday morning and 4:04 PM Sunday afternoon.

* WHAT. Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Southern Baltimore County and the City of Baltimore. * WHEN. Until 6 AM EDT Sunday, especially around the time of high tide. * IMPACTS. At 3.5 feet, flooding is occurring at the end of Thames Street in Baltimore. Water covers the promenade in the Inner Harbor in multiple locations. At 3.0 feet, water begins encroaching upon yards in the Bowleys Quarters area. * ADDITIONAL DETAILS. Tides one and a half to two feet above normal. The next high tide at Fort McHenry Baltimore is at 2:13 AM overnight.

* WHAT. East winds 15 to 25 kt with gusts up to 30 kt expected, becoming south to southwest winds by the afternoon. * WHERE. Tidal Potomac River from Key Bridge to Cobb Island MD, Chesapeake Bay north of Drum Point MD, Patapsco River including Baltimore Harbor, Chester River to Queenstown MD, Eastern Bay, and Choptank River to Cambridge MD and the Little Choptank River. * WHEN. Until 6 PM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. For the Coastal Flood Warning, one to two feet of inundation above ground level in low lying areas due to tidal flooding. For the Coastal Flood Advisory, 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. For the Coastal Flood Warning, until 8 AM EDT this morning, especially around the time of high tide. For the Coastal Flood Advisory, from 8 AM this morning to 5 PM EDT this afternoon, especially around the time of high tide. * IMPACTS. At 3.5 feet, water reaches the floor of the Maritime Museum in Annapolis, begins to cover Bowyer Road on the Naval Academy campus, and numerous businesses on Dock Street are flooded, along with the City Dock parking lot. * ADDITIONAL DETAILS. Tides two to two and a half feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 12:28 PM and 2:15 AM.

* WHAT. For the Coastal Flood Warning, one to two feet of inundation above ground level in low lying areas due to tidal flooding. For the Coastal Flood Advisory, 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, Arlington County, and the City of Alexandria. * WHEN. For the Coastal Flood Warning, until 7 AM EDT this morning, especially around the time of high tide. For the Coastal Flood Advisory, from 7 AM this morning to 6 PM EDT this evening, especially around the time of high tide. * IMPACTS. The unprotected area on the Southwest Waterfront at the DC Seafood Market is expected to flood. Water is expected to approach parts of the Hains Point Loop Road, but it will likely be closed. Water is expected to approach buildings near King Street and Union Street. * ADDITIONAL DETAILS. Tides two to two and a half feet above normal. The next high tide at Alexandria is at 3:27 AM and 4:22 PM. The next high tide at Washington Channel is at 4:04 PM and 4:27 AM.

* WHAT. Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. In Maryland, Prince Georges County. In Virginia, Fairfax, Stafford and Central and Southeast Prince William/Manassas/Manassas Park Counties. * WHEN. Until 6 PM EDT this evening, especially around the time of high tide. * IMPACTS. Flooding of lots, parks, and roads with only isolated road closures expected.

* WHAT. Up to one foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Calvert County. * WHEN. Until 3 PM EDT this afternoon, especially around the time of high tide. * IMPACTS. At 3.0 feet, water is expected to reach backyards near 9th Street in North Beach, and could approach 9th Street. At 3.5 feet, yards are flooded near Charles Street and Williams Street in Solomons. Nearby parking lots and the streets themselves are covered by more than a half foot of water. * ADDITIONAL DETAILS. Tides two to two and a half feet above normal. The next high tide at Solomons Island is at 9:41 AM and 10:46 PM. The next high tide at Chesapeake Beach is at 11:40 AM and 12:33 AM.

* WHAT. Up to one foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Southern Baltimore County and the city of Baltimore. * WHEN. Until 4 PM EDT this afternoon, especially around the time of high tide. * IMPACTS. At 3.5 feet, flooding is occurring at the end of Thames Street in Baltimore. Water covers the promenade in the Inner Harbor in multiple locations. At 3.0 feet, water begins encroaching upon yards in the Bowleys Quarters area. * ADDITIONAL DETAILS. Tides two to two and a half feet above normal. The next high tide at Fort McHenry Baltimore is at |2:27 PM and 3:20 AM.

* WHAT. Up to one foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Charles and King George Counties. * WHEN. Until 2 PM EDT this afternoon, 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 two and a half to three feet above normal. The next high tide at Dahlgren is at 10:33 AM and 11:16 PM. The next high tide at Indian Head is at 3:50 PM and 4:13 AM. The next high tide at Goose Bay is at 11:56 AM and 12:19 AM.