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Severe Thunderstorm Watch — Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, ANZ455, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA, Delaware Bay waters north of East Point NJ to Slaughter Beach DE, AN, Delaware Bay waters south of East Point NJ to Slaughter Beach DE, AN, Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM, AN, Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 NM, AN, Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 NM, AN, Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM, AN, Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM, AN
Issued
1:46 PM CDT · Tue, Jul 21 2026
Expires
9:00 PM CDT · Tue, Jul 21 2026
Issuing Office
NWS KPHI

Affected Areas

Caroline County, MD Kent County, MD Queen Anne's County, MD Talbot County, MD ANZ455 Berks County, PA Bucks County, PA Carbon County, PA Chester County, PA Delaware County, PA Lehigh County, PA Monroe County, PA Montgomery County, PA Northampton County, PA Philadelphia County, PA Delaware Bay waters north of East Point NJ to Slaughter Beach DE, AN Delaware Bay waters south of East Point NJ to Slaughter Beach DE, AN Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM, AN Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 NM, AN Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 NM, AN Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM, AN Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM, AN

Official Bulletin

339
WWUS61 KPHI 211846
WCNPHI

WATCH COUNTY NOTIFICATION FOR WATCHES 507/509
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
246 PM EDT TUE JUL 21 2026

DEC001-005-MDC011-029-035-041-220200-
/O.NEW.KPHI.SV.A.0509.260721T1846Z-260722T0200Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
509 IN EFFECT UNTIL 10 PM EDT THIS EVENING FOR THE FOLLOWING
AREAS

IN DELAWARE THIS WATCH INCLUDES 2 COUNTIES

IN CENTRAL DELAWARE

KENT

IN SOUTHERN DELAWARE

SUSSEX

IN MARYLAND THIS WATCH INCLUDES 4 COUNTIES

IN NORTHEAST MARYLAND

CAROLINE              KENT                  QUEEN ANNE'S
TALBOT

THIS INCLUDES THE CITIES OF CENTREVILLE, CHESTERTOWN, DENTON,
DOVER, EASTON, AND GEORGETOWN.

$$

ANZ455-220200-
/O.NEW.KPHI.SV.A.0509.260721T1846Z-260722T0200Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
509 IN EFFECT UNTIL 10 PM EDT THIS EVENING FOR THE FOLLOWING
AREAS

THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS

COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM

$$

DEC003-NJC001-005-007-009-011-015-019-021-023-025-027-029-033-035-037-041-PAC011-017-025-029-045-077-089-091-095-101-220100-
/O.CON.KPHI.TO.A.0507.000000T0000Z-260722T0100Z/

TORNADO WATCH 507 REMAINS VALID UNTIL 9 PM EDT THIS EVENING FOR
THE FOLLOWING AREAS

IN DELAWARE THIS WATCH INCLUDES 1 COUNTY

IN NORTHERN DELAWARE

NEW CASTLE

IN NEW JERSEY THIS WATCH INCLUDES 16 COUNTIES

IN CENTRAL NEW JERSEY

MERCER                MONMOUTH

IN NORTHERN NEW JERSEY

HUNTERDON             MIDDLESEX             MORRIS
SOMERSET              SUSSEX                WARREN

IN SOUTHERN NEW JERSEY

ATLANTIC              BURLINGTON            CAMDEN
CAPE MAY              CUMBERLAND            GLOUCESTER
OCEAN                 SALEM

IN PENNSYLVANIA THIS WATCH INCLUDES 10 COUNTIES

IN EAST CENTRAL PENNSYLVANIA

BERKS                 LEHIGH                NORTHAMPTON

IN NORTHEAST PENNSYLVANIA

CARBON                MONROE

IN SOUTHEAST PENNSYLVANIA

BUCKS                 CHESTER               DELAWARE
MONTGOMERY            PHILADELPHIA

THIS INCLUDES THE CITIES OF ALLENTOWN, ATLANTIC CITY, BETHLEHEM,
BLAIRSTOWN, CAMDEN, CHERRY HILL, DEPTFORD, DOYLESTOWN,
EAST BRUNSWICK, EASTON, EDISON, FLEMINGTON, FREEHOLD, GLASSBORO,
HAMMONTON, JIM THORPE, MEDIA, MILLVILLE, MOORESTOWN, MORRISTOWN,
MOUNT HOLLY, NEW BRUNSWICK, NEWTON, NORRISTOWN,
NORTH BRUNSWICK TOWNSHIP, OCEAN CITY, PENNSVILLE, PERTH AMBOY,
PHILADELPHIA, READING, SAYREVILLE, SOMERSET, STROUDSBURG,
TOMS RIVER, TRENTON, WEST CHESTER, AND WILMINGTON.

$$

ANZ430-431-450>454-220100-
/O.CON.KPHI.TO.A.0507.000000T0000Z-260722T0100Z/

TORNADO WATCH 507 REMAINS VALID UNTIL 9 PM EDT THIS EVENING FOR
THE FOLLOWING AREAS

THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS

DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE
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
COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM
COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM

$$

MJL