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. Patapsco River including Baltimore Harbor. * Until 315 PM EDT. * At 139 PM EDT, a strong thunderstorm was located 16 nm northeast of Key Bridge, moving east at 25 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. Fort Smallwood State Park, Pinehurst, North Point State Park, Hart Miller Island, Magothy River, Gunpowder River, Gibson Island, Baltimore Light, Bodkin Point, Pooles Island, and Sevenfoot Knoll.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 433 IN EFFECT UNTIL 7 PM EDT THIS EVENING 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 CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA 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 TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND

* WHAT. Flash flooding caused by excessive rainfall is possible. * WHERE. Including the following , District of Columbia, in Maryland, Anne Arundel, Carroll, Central and Southeast Howard, Central and Southeast Montgomery, Charles, Frederick MD, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery, Prince Georges, Southeast Harford and Southern Baltimore, in Virginia, Arlington/Falls Church/Alexandria, Central and Southeast Prince William/Manassas/Manassas Park, Eastern Loudoun, Fairfax, Northwest Prince William and Western Loudoun. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS. - Showers and thunderstorms are likely this afternoon through early this evening. Some thunderstorms will produce heavy rainfall with amounts around 1 to 2 inches within an hour. Localized amounts up to 3 inches are possible in the strongest storms. The heavy amounts of rain in a short period of time may lead to rapid rises of creeks and streams out of their banks as well as potential flash flooding in urban areas. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information

SVRLWX The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for. Howard County in central Maryland. East central Montgomery County in central Maryland. * Until 200 PM EDT. * At 115 PM EDT, a severe thunderstorm was located over Olney, moving northeast at 25 mph. HAZARD. 60 mph wind gusts. 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, Rockville, Gaithersburg, Olney, Elkridge, Historic Ellicott City, Ellicott City, Aspen Hill, Montgomery Village, Redland, Savage-guilford, Rossmoor, Scaggsville, Ilchester, Cloverly, Burtonsville, Jessup, Savage, Derwood, and Fulton.

At 140 PM EDT, a severe thunderstorm was located over Olney, moving east at 15 mph. HAZARD. 60 mph wind gusts. 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, Rockville, Olney, Elkridge, Historic Ellicott City, Ellicott City, Aspen Hill, Montgomery Village, Redland, Savage-guilford, Rossmoor, Scaggsville, Ilchester, Cloverly, Burtonsville, Jessup, Savage, Fulton, Spencerville, and Highland.

FFWLWX The National Weather Service in Sterling Virginia has issued a * Flash Flood Warning for. Central Montgomery County in central Maryland. * Until 430 PM EDT. * At 125 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1.5 to 2.5 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD. Flash flooding caused by thunderstorms. SOURCE. Radar. IMPACT. Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include. Germantown. Rockville. Gaithersburg. Olney. Aspen Hill. Potomac. North Bethesda. Montgomery Village. North Potomac. Redland. Rossmoor. Wheaton-Glenmont. Wheaton. Darnestown. Derwood. Washington Grove. Laytonsville. Norbeck.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 433 IN EFFECT UNTIL 7 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN DELAWARE THIS WATCH INCLUDES 3 COUNTIES IN CENTRAL DELAWARE KENT IN NORTHERN DELAWARE NEW CASTLE IN SOUTHERN DELAWARE SUSSEX IN MARYLAND THIS WATCH INCLUDES 4 COUNTIES IN NORTHEAST MARYLAND CAROLINE KENT QUEEN ANNE'S TALBOT IN NEW JERSEY THIS WATCH INCLUDES 10 COUNTIES IN CENTRAL NEW JERSEY MERCER MONMOUTH IN SOUTHERN NEW JERSEY ATLANTIC BURLINGTON CAMDEN CAPE MAY CUMBERLAND GLOUCESTER OCEAN SALEM IN PENNSYLVANIA THIS WATCH INCLUDES 6 COUNTIES IN EAST CENTRAL PENNSYLVANIA BERKS IN SOUTHEAST PENNSYLVANIA BUCKS CHESTER DELAWARE MONTGOMERY PHILADELPHIA THIS INCLUDES THE CITIES OF ATLANTIC CITY, CAMDEN, CENTREVILLE, CHERRY HILL, CHESTERTOWN, DENTON, DEPTFORD, DOVER, DOYLESTOWN, EASTON, FREEHOLD, GEORGETOWN, GLASSBORO, HAMMONTON, MEDIA, MILLVILLE, MOORESTOWN, MOUNT HOLLY, NORRISTOWN, OCEAN CITY, PENNSVILLE, PHILADELPHIA, READING, TOMS RIVER, TRENTON, WEST CHESTER, AND WILMINGTON.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 433 IN EFFECT UNTIL 7 PM EDT THIS EVENING FOR THE FOLLOWING AREAS THE DISTRICT OF COLUMBIA IN MARYLAND THIS WATCH INCLUDES 13 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 ST. MARYS IN VIRGINIA THIS WATCH INCLUDES 13 COUNTIES IN CENTRAL VIRGINIA CITY OF FREDERICKSBURG KING GEORGE IN NORTHERN VIRGINIA ARLINGTON CITY OF ALEXANDRIA CITY OF FAIRFAX CITY OF FALLS CHURCH CITY OF MANASSAS CITY OF MANASSAS PARK FAIRFAX FAUQUIER LOUDOUN PRINCE WILLIAM STAFFORD THIS INCLUDES THE CITIES OF ABERDEEN, ALEXANDRIA, ANNAPOLIS, ARLINGTON, ARNOLD, ASPEN HILL, BALLENGER CREEK, BALTIMORE, BEL AIR, BETHESDA, BOWIE, CALIFORNIA, CAMP SPRINGS, CATONSVILLE, CHANTILLY, CHESAPEAKE BEACH, CLINTON, COLLEGE PARK, COLUMBIA, DAHLGREN, DUNDALK, DUNKIRK, EDGEWOOD, ELDERSBURG, ELKTON, ELLICOTT CITY, ESSEX, FAIRFAX, FALLS CHURCH, FALLSTON, FALMOUTH, FREDERICK, FREDERICKSBURG, GAITHERSBURG, GERMANTOWN, GLEN BURNIE, GREENBELT, HAVRE DE GRACE, HERNDON, HUNTINGTOWN, JOPPATOWNE, LAUREL, LEESBURG, LEXINGTON PARK, LUSBY, MANASSAS, MANASSAS PARK, MCLEAN, NORTH BEACH, ODENTON, PARKVILLE, PIKESVILLE, POTOMAC, PRINCE FREDERICK, RANDALLSTOWN, RESTON, ROCKVILLE, SEVERN, SEVERNA PARK, SILVER SPRING, SOUTH GATE, ST. CHARLES, STERLING, SUITLAND-SILVER HILL, TOWSON, WALDORF, WARRENTON, WASHINGTON, WESTMINSTER, AND WOODBRIDGE.