* WHAT. For the Dense Fog Advisory, dense fog will reduce visibility to 1 NM or less. For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 25 kt and seas 3 to 5 ft. * WHERE. Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm, Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm and Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm. * WHEN. For the Dense Fog Advisory, until 10 PM EDT this evening. For the Small Craft Advisory, until 6 AM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 471 IN EFFECT UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS CHESAPEAKE BAY NORTH OF POOLES ISLAND MD CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD PATAPSCO RIVER INCLUDING BALTIMORE HARBOR CHESTER RIVER TO QUEENSTOWN MD EASTERN BAY CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER PATUXENT RIVER TO BROOMES ISLAND MD

SEVERE THUNDERSTORM WATCH 471 REMAINS VALID UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS CHESAPEAKE BAY NORTH OF POOLES ISLAND MD CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD PATAPSCO RIVER INCLUDING BALTIMORE HARBOR CHESTER RIVER TO QUEENSTOWN MD EASTERN BAY CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER PATUXENT RIVER TO BROOMES ISLAND MD

SEVERE THUNDERSTORM WATCH 471 REMAINS VALID UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS CHESAPEAKE BAY NORTH OF POOLES ISLAND MD CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD PATAPSCO RIVER INCLUDING BALTIMORE HARBOR CHESTER RIVER TO QUEENSTOWN MD EASTERN BAY CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER PATUXENT RIVER TO BROOMES ISLAND MD

* WHAT. For the Dense Fog Advisory, dense fog will reduce visibility to 1 NM or less. For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 25 kt and seas 3 to 5 ft. * WHERE. Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm, Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm and Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm. * WHEN. For the Dense Fog Advisory, until 10 PM EDT this evening. For the Small Craft Advisory, until 6 AM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

SEVERE THUNDERSTORM WATCH 471 REMAINS VALID UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS CHESAPEAKE BAY NORTH OF POOLES ISLAND MD CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD PATAPSCO RIVER INCLUDING BALTIMORE HARBOR CHESTER RIVER TO QUEENSTOWN MD EASTERN BAY CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER

SEVERE THUNDERSTORM WATCH 471 REMAINS VALID UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS CHESAPEAKE BAY NORTH OF POOLES ISLAND MD CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD PATAPSCO RIVER INCLUDING BALTIMORE HARBOR CHESTER RIVER TO QUEENSTOWN MD EASTERN BAY CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER

SMWPHI The National Weather Service in Mount Holly NJ has issued a * Special Marine Warning for. Lower Delaware Bay. Coastal waters from Cape May NJ to Fenwick Island DE out 20 nm. * Until midnight EDT. * At 1101 PM EDT, a severe thunderstorm was located 17 nm west of Assawoman Bay, moving northeast at 25 knots. HAZARD. Wind gusts in excess of 50 knots. SOURCE. Radar. IMPACT. Boats could suffer significant structural damage in high winds. Small craft could capsize in suddenly higher waves. * Locations impacted include. Overfalls Shoal, Rehoboth Beach, Bethany Beach, Fenwick Island, Indian River Inlet Bridge, and Cape Henlopen.

* WHAT. Southwest winds 10 to 20 kt with gusts up to 25 kt and seas 3 to 5 ft. * WHERE. Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm, Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm, Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm and Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm. * WHEN. Until 6 AM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft.

SMWLWX The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for. Chesapeake Bay from North Beach to Drum Point MD. Chesapeake Bay from Sandy Point to North Beach MD. Choptank River to Cambridge MD and the Little Choptank River. Eastern Bay. * Until 1130 PM EDT. * At 1000 PM EDT, strong thunderstorms were located along a line extending from 7 nm east of Tidal Basin to 7 nm east of Fort Washington to 10 nm northeast of Port Tobacco River, moving east at 45 knots. HAZARD. Wind gusts 34 knots or greater. SOURCE. Radar indicated. IMPACT. Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. * Locations impacted include. Choptank River, Knapps Narrows Bridge, Tilghman Island, Blackwalnut Point, Chesapeake Beach, Greenbury Point, Naval Academy, North Beach, Shady Side, Herring Bay, Highland Beach, Sandy Point State Park, Severn River, Bloody Point Light, Matapeake, Chesapeake Bay Bridge, Thomas Point Light, Flag Harbor, James Island, and Poplar Island.

SMWLWX The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for. Chesapeake Bay from Pooles Island to Sandy Point MD. Chesapeake Bay north of Pooles Island MD. Chester River to Queenstown MD. Eastern Bay. Patapsco River including Baltimore Harbor. * Until midnight EDT. * At 958 PM EDT, strong thunderstorms were located along a line extending from 39 nm northwest of Middle River to 13 nm northeast of Tidal Basin, moving east at 35 knots. HAZARD. Wind gusts 34 knots or greater. SOURCE. Radar indicated. IMPACT. Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. * Locations impacted include. North Point State Park, Magothy River, Dobbins Island, Pooles Island, Greenbury Point, Gunpowder River, Sandy Point State Park, Severn River, Northeast River, Pinehurst, Turkey Point, Fort Smallwood Park, Hart Miller Island, Gibson Island, Bodkin Point, Tolchester Beach, Worton Point, Spesutie Island, Love Point, and Naval Academy.

The Maryland Department of the Environment has issued a Code ORANGE Air Quality Alert Wednesday for Northeast Maryland. A Code Orange Air Quality Alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children, people suffering from asthma, heart disease or other lung diseases and the elderly. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 471 IN EFFECT UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS THE DISTRICT OF COLUMBIA IN MARYLAND THIS WATCH INCLUDES 12 COUNTIES IN CENTRAL MARYLAND ANNE ARUNDEL HOWARD MONTGOMERY PRINCE GEORGES IN NORTH CENTRAL MARYLAND CARROLL FREDERICK IN NORTHEAST MARYLAND CECIL IN NORTHERN MARYLAND BALTIMORE BALTIMORE CITY HARFORD IN SOUTHERN MARYLAND CALVERT CHARLES IN VIRGINIA THIS WATCH INCLUDES 17 COUNTIES IN CENTRAL VIRGINIA CITY OF FREDERICKSBURG KING GEORGE ORANGE SPOTSYLVANIA IN NORTHERN VIRGINIA ARLINGTON CITY OF ALEXANDRIA CITY OF FAIRFAX CITY OF FALLS CHURCH CITY OF MANASSAS CITY OF MANASSAS PARK CULPEPER FAIRFAX FAUQUIER LOUDOUN PRINCE WILLIAM STAFFORD IN NORTHWEST VIRGINIA RAPPAHANNOCK THIS INCLUDES THE CITIES OF ABERDEEN, ALEXANDRIA, ANNAPOLIS, ARLINGTON, ARNOLD, ASPEN HILL, BALLENGER CREEK, BALTIMORE, BEL AIR, BETHESDA, BOWIE, CAMP SPRINGS, CATONSVILLE, CHANTILLY, CHESAPEAKE BEACH, CLINTON, COLLEGE PARK, COLUMBIA, CULPEPER, DAHLGREN, DUNDALK, DUNKIRK, EDGEWOOD, ELDERSBURG, ELKTON, ELLICOTT CITY, ESSEX, FAIRFAX, FALLS CHURCH, FALLSTON, FALMOUTH, FREDERICK, FREDERICKSBURG, GAITHERSBURG, GERMANTOWN, GLEN BURNIE, GORDONSVILLE, GREENBELT, HAVRE DE GRACE, HERNDON, HUNTINGTOWN, JOPPATOWNE, LAUREL, LEESBURG, LUSBY, MANASSAS, MANASSAS PARK, MCLEAN, NORTH BEACH, ODENTON, ORANGE, PARKVILLE, PIKESVILLE, POTOMAC, PRINCE FREDERICK, RANDALLSTOWN, RESTON, ROCKVILLE, SEVERN, SEVERNA PARK, SILVER SPRING, SOUTH GATE, SPOTSYLVANIA COURTHOUSE, ST. CHARLES, STERLING, SUITLAND-SILVER HILL, TOWSON, WALDORF, WARRENTON, WASHINGTON, WASHINGTON, WESTMINSTER, AND WOODBRIDGE.

SEVERE THUNDERSTORM WATCH 471 REMAINS VALID UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS THE DISTRICT OF COLUMBIA IN MARYLAND THIS WATCH INCLUDES 10 COUNTIES IN CENTRAL MARYLAND ANNE ARUNDEL HOWARD PRINCE GEORGES IN NORTH CENTRAL MARYLAND CARROLL IN NORTHEAST MARYLAND CECIL IN NORTHERN MARYLAND BALTIMORE BALTIMORE CITY HARFORD IN SOUTHERN MARYLAND CALVERT CHARLES IN VIRGINIA THIS WATCH INCLUDES 4 COUNTIES IN CENTRAL VIRGINIA KING GEORGE IN NORTHERN VIRGINIA ARLINGTON CITY OF ALEXANDRIA CITY OF FALLS CHURCH THIS INCLUDES THE CITIES OF ABERDEEN, ALEXANDRIA, ANNAPOLIS, ARLINGTON, ARNOLD, BALTIMORE, BEL AIR, BOWIE, CAMP SPRINGS, CATONSVILLE, CHESAPEAKE BEACH, CLINTON, COLLEGE PARK, COLUMBIA, DAHLGREN, DUNDALK, DUNKIRK, EDGEWOOD, ELDERSBURG, ELKTON, ELLICOTT CITY, ESSEX, FALLS CHURCH, FALLSTON, GLEN BURNIE, GREENBELT, HAVRE DE GRACE, HUNTINGTOWN, JOPPATOWNE, LAUREL, LUSBY, NORTH BEACH, ODENTON, PARKVILLE, PIKESVILLE, PRINCE FREDERICK, RANDALLSTOWN, SEVERN, SEVERNA PARK, SOUTH GATE, ST. CHARLES, SUITLAND-SILVER HILL, TOWSON, WALDORF, WASHINGTON, AND WESTMINSTER.

SEVERE THUNDERSTORM WATCH 471 REMAINS VALID UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS IN MARYLAND THIS WATCH INCLUDES 6 COUNTIES IN CENTRAL MARYLAND ANNE ARUNDEL IN NORTHEAST MARYLAND CECIL IN NORTHERN MARYLAND BALTIMORE BALTIMORE CITY HARFORD IN SOUTHERN MARYLAND CALVERT THIS INCLUDES THE CITIES OF ABERDEEN, ANNAPOLIS, ARNOLD, BALTIMORE, BEL AIR, CATONSVILLE, CHESAPEAKE BEACH, DUNDALK, DUNKIRK, EDGEWOOD, ELKTON, ESSEX, FALLSTON, GLEN BURNIE, HAVRE DE GRACE, HUNTINGTOWN, JOPPATOWNE, LUSBY, NORTH BEACH, ODENTON, PARKVILLE, PIKESVILLE, PRINCE FREDERICK, RANDALLSTOWN, SEVERN, SEVERNA PARK, SOUTH GATE, AND TOWSON.

SEVERE THUNDERSTORM WATCH 471 REMAINS VALID UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS IN MARYLAND THIS WATCH INCLUDES 4 COUNTIES IN NORTHEAST MARYLAND CECIL IN NORTHERN MARYLAND BALTIMORE BALTIMORE CITY HARFORD THIS INCLUDES THE CITIES OF ABERDEEN, BALTIMORE, BEL AIR, CATONSVILLE, DUNDALK, EDGEWOOD, ELKTON, ESSEX, FALLSTON, HAVRE DE GRACE, JOPPATOWNE, PARKVILLE, PIKESVILLE, RANDALLSTOWN, AND TOWSON.

SEVERE THUNDERSTORM WATCH 471 REMAINS VALID UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS IN MARYLAND THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST MARYLAND CECIL IN NORTHERN MARYLAND HARFORD THIS INCLUDES THE CITIES OF ABERDEEN, BEL AIR, EDGEWOOD, ELKTON, FALLSTON, HAVRE DE GRACE, AND JOPPATOWNE.

SVRPHI The National Weather Service in Mount Holly NJ has issued a * Severe Thunderstorm Warning for. Southern Sussex County in southern Delaware. * Until 1145 PM EDT. * At 1100 PM EDT, a severe thunderstorm was located near Delmar, or 10 miles northeast of Salisbury, moving northeast at 30 mph. HAZARD. 60 mph wind gusts. SOURCE. Radar indicated. IMPACT. Damage to roofs, siding, trees, and power lines is possible. * Locations impacted include. Millsboro, Laurel, Lewes, Selbyville, Delmar, Dagsboro, Millville, Henlopen Acres, Gumboro, Sycamore, Long Neck, Ocean View, Frankford, South Bethany, and Dewey Beach.