* WHAT. Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE. Queen Annes, Talbot and Caroline. * WHEN. Until 2 AM EDT Tuesday. * IMPACTS. At this level, flooding begins on the most vulnerable roads in bayside communities and along tidal waterways. Some partial or full road closures are possible.

* 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 AM EDT Monday, 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 10:24 PM and 10:14 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 11 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 6:41 AM and 7:11 PM. The next high tide at Goose Bay is at 7:54 AM and 8:11 PM. The next high tide at Indian Head is at 11:11 PM and 11:48 AM.

* WHAT. Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in St. Marys County. * WHEN. Until 8 PM EDT Sunday, 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 high tide at Point Lookout is at 4:46 AM and 5:52 PM. The next high tide at Coltons Point is at 6:44 AM and 7:01 PM. The next high tide at Piney Point is at 6:08 AM and 6:25 PM.

* WHAT. One to two feet 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 4 AM EDT Monday, 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 and a half to two feet above normal. The next high tide at Alexandria is at 11:43 PM and 12:20 PM. The next high tide at Washington Channel is at 11:25 PM and 12:02 PM.

* 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 11 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 one and a half to two feet above normal. The next high tide at Chesapeake Beach is at 7:27 AM and 8:33 PM. The next high tide at Solomons Island is at 5:44 AM and 6:35 PM.

* WHAT. One to two feet of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. Until 4 AM EDT Monday, 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. Bayside Beach begins to flood around Harbor Rd and Lake Dr. * ADDITIONAL DETAILS. Tides two to two and a half feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 9:06 PM and 8:37 AM.

* WHAT. Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE. Queen Annes, Talbot and Caroline. * WHEN. Until 2 AM EDT Tuesday. * IMPACTS. At this level, flooding begins on the most vulnerable roads in bayside communities and along tidal waterways. Some partial or full road closures are possible.

* 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 AM EDT Monday, 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 10:14 AM and 11:20 PM.

* 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, one to two feet 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 2 AM EDT Sunday, especially around the time of high tide. For the Coastal Flood Advisory, from 9 AM Sunday to 4 AM EDT Monday, 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 tide at Alexandria is at 11:43 PM and 12:20 PM. The next high tide at Washington Channel is at 11:25 PM and 12:02 PM.

* WHAT. One to two feet of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. Until 4 AM EDT Monday, 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. Bayside Beach begins to flood around Harbor Rd and Lake Dr. * ADDITIONAL DETAILS. Tides two to two and a half feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 8:37 AM and 10:06 PM.

* WHAT. Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in St. Marys County. * WHEN. Until 8 PM EDT Sunday, 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 high tide at Point Lookout is at 4:46 AM and 5:52 PM. The next high tide at Coltons Point is at 6:44 AM and 7:01 PM. The next high tide at Piney Point is at 6:08 AM and 6:25 PM.

* 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 11 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 one and a half to two feet above normal. The next high tide at Chesapeake Beach is at 7:27 AM and 8:33 PM. The next high tide at Solomons Island is at 5:44 AM and 6:35 PM.

* 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 11 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 6:41 AM and 7:11 PM. The next high tide at Goose Bay is at 7:54 AM and 8:11 PM. The next high tide at Indian Head is at 11:11 PM and 11:48 AM.

A few east to southeasterly wind gusts to around 20 knots are possible overnight. Inexperienced mariners, especially those operating smaller vessels, should exercise extra caution if navigating the waters during this time.

A few east to southeasterly wind gusts to around 20 knots are possible overnight. Inexperienced mariners, especially those operating smaller vessels, should exercise extra caution if navigating the waters during this time.

* WHAT. One to two feet 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. From 9 AM this morning to 4 AM EDT Monday, 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. Water is expected to approach the curb near the intersection of King Street and Strand Street in Alexandria. * ADDITIONAL DETAILS. Tides one and a half to two feet above normal. The next high tide at Alexandria is at 12:20 PM and 12:37 AM. The next high tide at Washington Channel is at 12:02 PM and 12:19 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 AM EDT Monday, especially around the time of high tide. * IMPACTS. At 4.25 feet, the concrete promenade at Fells Point begins to flood. Water also begins to cover the boardwalk at the Maritime Park water taxi stop. Thames Street is flooded, and much of the promenade in the Inner Harbor is flooded. 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 10:14 AM and 11:20 PM.

* WHAT. One to two feet of inundation above ground level in low- lying areas due to tidal flooding. * WHERE. Shoreline in Charles and King George Counties. * WHEN. Until 11 PM EDT this evening, 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 6:41 AM and 7:11 PM. The next high tide at Goose Bay is at 7:54 AM and 8:11 PM. The next high tide at Indian Head is at 11:48 AM and 12:05 AM.

* WHAT. One to two feet of inundation above ground level in low- lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. Until 4 AM EDT Monday, 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. Bayside Beach begins to flood around Harbor Rd and Lake Dr. * ADDITIONAL DETAILS. Tides two to two and a half feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 8:37 AM and 10:06 PM.

* WHAT. Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in St. Marys County. * WHEN. Until 8 PM EDT this evening, 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 two to two and a half feet above normal. The next high tide at Coltons Point is at 6:44 AM and 7:01 PM. The next high tide at Point Lookout is at 4:46 AM and 5:52 PM. The next high tide at Piney Point is at 6:08 AM and 6:25 PM.

* 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 11 PM EDT this evening, 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 5:44 AM and 6:35 PM. The next high tide at Chesapeake Beach is at 7:27 AM and 8:33 PM.

* WHAT. Flash flooding caused by excessive rainfall is possible. * WHERE. Anne Arundel, Central and Southeast Howard, Southeast Harford, and Southern Baltimore Counties including the City of Baltimore. * WHEN. Until 6 AM EDT early this 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. - A complex of slow-moving thunderstorms producing heavy rain may result in excessive rainfall amounts of 1 to 3 inches per hour. This would result in rapid rises of water on small streams and creeks, as well as in urban and poor drainage areas. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information.

A few east to southeasterly wind gusts to around 20 knots are possible overnight. Inexperienced mariners, especially those operating smaller vessels, should exercise extra caution if navigating the waters during this time.

* WHAT. Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE. Queen Annes, Talbot and Caroline. * WHEN. Until 2 AM EDT Tuesday. * IMPACTS. At this level, flooding begins on the most vulnerable roads in bayside communities and along tidal waterways. Some partial or full road closures are possible.

* WHAT. One to two feet of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE. Westmoreland and Northumberland Counties. * WHEN. Until midnight EDT Monday night. * IMPACTS. Widespread flooding of vulnerable areas will result in an elevated threat of property damage to homes and businesses near the waterfront and shoreline. Water will be 1 to 2 feet above ground level in some areas resulting in a sufficient depth to close numerous roads and threaten homes and businesses. Flooding will extend inland from the waterfront along tidal rivers and bays resulting in some road closures and flooding of vehicles.

SVRLWX The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for. Southeastern Carroll County in north central Maryland. Northwestern Howard County in central Maryland. Northeastern Montgomery County in central Maryland. * Until 245 AM EDT. * At 208 AM EDT, a severe thunderstorm was located near Eldersburg, or 11 miles south of Westminster, moving south at 30 mph. HAZARD. 60 mph wind gusts and quarter size hail. SOURCE. Radar indicated. IMPACT. Damaging winds will cause some trees and large branches to fall. This could injure those outdoors, as well as damage homes and vehicles. Roadways may become blocked by downed trees. Localized power outages are possible. Unsecured light objects may become projectiles. * Locations impacted include. Columbia, Damascus, Ellicott City, Eldersburg, Mount Airy, Sykesville, Oakland, Laytonsville, Clarksville, Henryton, West Friendship, Lisbon, Glenwood, Dayton, Gaither, Watersville, Poplar Springs, Roxbury Mills, Woodbine, and Glenelg.