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Severe Thunderstorm Watch — Bertie County, NC, Camden County, NC, Chowan County, NC, Currituck County, NC, Gates County, NC, Hertford County, NC, Northampton County, NC, Pasquotank County, NC, Perquimans County, NC, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Accomack County, VA, Amelia County, VA, Brunswick County, VA, Caroline County, VA, Charles City County, VA, Chesterfield County, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Fluvanna County, VA, Gloucester County, VA, Goochland County, VA, Greensville County, VA, Hanover County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, King and Queen County, VA, King William County, VA, Lancaster County, VA, Louisa County, VA, Lunenburg County, VA, Mathews County, VA, Mecklenburg County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Northumberland County, VA, Nottoway County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Richmond County, VA, Southampton County, VA, Spotsylvania County, VA, Surry County, VA, Sussex County, VA, Westmoreland County, VA, York County, VA, City of Chesapeake County, VA, City of Colonial Heights County, VA, City of Emporia County, VA, City of Franklin County, VA, City of Hampton County, VA, City of Hopewell County, VA, City of Newport News County, VA, City of Norfolk County, VA, City of Petersburg County, VA, City of Poquoson County, VA, City of Portsmouth County, VA, City of Richmond County, VA, City of Suffolk County, VA, City of Virginia Beach County, VA, City of Williamsburg County, VA, 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, Chesapeake Bay from Smith Point to Windmill Point VA, AN, Chesapeake Bay from Windmill Point to New Point Comfort VA, AN, Chesapeake Bay from New Point Comfort to Little Creek VA, AN, Currituck Sound, AN, Chesapeake Bay from Little Creek VA to Cape Henry VA including the Chesapeake Bay Bridge Tunnel, AN, Rappahannock River from Urbanna to Windmill Point, AN, York River, AN, James River from Jamestown to the James River Bridge, AN, James River from JRB to HRBT, Including the Elizabeth River, AN, Coastal waters from Chincoteague to Parramore Island VA out 20 NM, AN, Coastal waters from Parramore Island to Cape Charles Light VA out 20 NM, AN, Coastal Waters from Cape Charles Light to Virginia-North Carolina border out 20 NM, AN, Coastal waters from NC VA border to Currituck Beach Light NC out 20 NM, AN, District of Columbia County, DC, Kent County, DE, New Castle County, DE, Sussex County, DE, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Caroline County, MD, Carroll County, MD, Cecil County, MD, Charles County, MD, Dorchester County, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Kent County, MD, Montgomery County, MD, Prince Georges County, MD, Queen Anne's County, MD, St. Marys County, MD, Somerset County, MD, Talbot County, MD, Wicomico County, MD, Worcester County, MD, Baltimore City County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Salem County, NJ, Somerset County, NJ, Warren County, NJ, Adams County, PA, Berks County, PA, Bucks County, PA, Chester County, PA, Delaware County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA, York County, PA, Arlington County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, King George County, VA, Loudoun County, VA, Madison County, VA, Orange County, VA, Prince William County, VA, Rappahannock County, VA, Stafford County, VA, City of Alexandria County, VA, City of Fairfax County, VA, City of Falls Church County, VA, City of Fredericksburg County, VA, City of Manassas County, VA, City of Manassas Park County, VA, 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 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, Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM, AN, Chesapeake Bay north of Pooles Island MD, AN, Chesapeake Bay from Pooles Island to Sandy Point MD, AN, Chesapeake Bay from Sandy Point to North Beach MD, AN, Chesapeake Bay from North Beach to Drum Point MD, AN, Chesapeake Bay from Drum Point MD to Smith Point VA, AN, Tidal Potomac from Key Bridge to Indian Head MD, AN, Tidal Potomac from Indian Head to Cobb Island MD, AN, Tidal Potomac from Cobb Island MD to Smith Point VA, AN, Patapsco River including Baltimore Harbor, AN, Chester River to Queenstown MD, AN, Eastern Bay, AN, Choptank River to Cambridge MD and the Little Choptank River, AN, Patuxent River to Broomes Island MD, AN, Tangier Sound and the inland waters surrounding Bloodsworth Island, AN, Coastal waters from Fenwick Island DE to Chincoteague VA out 20 NM, AN
Issued
1:30 PM CDT · Thu, Aug 20 2026
Expires
9:00 PM CDT · Thu, Aug 20 2026
Issuing Office
NWS KWNS

Affected Areas

Bertie County, NC Camden County, NC Chowan County, NC Currituck County, NC Gates County, NC Hertford County, NC Northampton County, NC Pasquotank County, NC Perquimans County, NC Mercer County, NJ Middlesex County, NJ Monmouth County, NJ Ocean County, NJ Accomack County, VA Amelia County, VA Brunswick County, VA Caroline County, VA Charles City County, VA Chesterfield County, VA Cumberland County, VA Dinwiddie County, VA Essex County, VA Fluvanna County, VA Gloucester County, VA Goochland County, VA Greensville County, VA Hanover County, VA Henrico County, VA Isle of Wight County, VA James City County, VA King and Queen County, VA King William County, VA Lancaster County, VA Louisa County, VA Lunenburg County, VA Mathews County, VA Mecklenburg County, VA Middlesex County, VA New Kent County, VA Northampton County, VA Northumberland County, VA Nottoway County, VA Powhatan County, VA Prince Edward County, VA Prince George County, VA Richmond County, VA Southampton County, VA Spotsylvania County, VA Surry County, VA Sussex County, VA Westmoreland County, VA York County, VA City of Chesapeake County, VA City of Colonial Heights County, VA City of Emporia County, VA City of Franklin County, VA City of Hampton County, VA City of Hopewell County, VA City of Newport News County, VA City of Norfolk County, VA City of Petersburg County, VA City of Poquoson County, VA City of Portsmouth County, VA City of Richmond County, VA City of Suffolk County, VA City of Virginia Beach County, VA City of Williamsburg County, VA 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 Chesapeake Bay from Smith Point to Windmill Point VA, AN Chesapeake Bay from Windmill Point to New Point Comfort VA, AN Chesapeake Bay from New Point Comfort to Little Creek VA, AN Currituck Sound, AN Chesapeake Bay from Little Creek VA to Cape Henry VA including the Chesapeake Bay Bridge Tunnel, AN Rappahannock River from Urbanna to Windmill Point, AN York River, AN James River from Jamestown to the James River Bridge, AN James River from JRB to HRBT, Including the Elizabeth River, AN Coastal waters from Chincoteague to Parramore Island VA out 20 NM, AN Coastal waters from Parramore Island to Cape Charles Light VA out 20 NM, AN Coastal Waters from Cape Charles Light to Virginia-North Carolina border out 20 NM, AN Coastal waters from NC VA border to Currituck Beach Light NC out 20 NM, AN District of Columbia County, DC Kent County, DE New Castle County, DE Sussex County, DE Anne Arundel County, MD Baltimore County, MD Calvert County, MD Caroline County, MD Carroll County, MD Cecil County, MD Charles County, MD Dorchester County, MD Frederick County, MD Harford County, MD Howard County, MD Kent County, MD Montgomery County, MD Prince Georges County, MD Queen Anne's County, MD St. Marys County, MD Somerset County, MD Talbot County, MD Wicomico County, MD Worcester County, MD Baltimore City County, MD Atlantic County, NJ Burlington County, NJ Camden County, NJ Cape May County, NJ Cumberland County, NJ Gloucester County, NJ Hunterdon County, NJ Salem County, NJ Somerset County, NJ Warren County, NJ Adams County, PA Berks County, PA Bucks County, PA Chester County, PA Delaware County, PA Lancaster County, PA Lebanon County, PA Lehigh County, PA Montgomery County, PA Northampton County, PA Philadelphia County, PA York County, PA Arlington County, VA Culpeper County, VA Fairfax County, VA Fauquier County, VA King George County, VA Loudoun County, VA Madison County, VA Orange County, VA Prince William County, VA Rappahannock County, VA Stafford County, VA City of Alexandria County, VA City of Fairfax County, VA City of Falls Church County, VA City of Fredericksburg County, VA City of Manassas County, VA City of Manassas Park County, VA 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 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 Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM, AN Chesapeake Bay north of Pooles Island MD, AN Chesapeake Bay from Pooles Island to Sandy Point MD, AN Chesapeake Bay from Sandy Point to North Beach MD, AN Chesapeake Bay from North Beach to Drum Point MD, AN Chesapeake Bay from Drum Point MD to Smith Point VA, AN Tidal Potomac from Key Bridge to Indian Head MD, AN Tidal Potomac from Indian Head to Cobb Island MD, AN Tidal Potomac from Cobb Island MD to Smith Point VA, AN Patapsco River including Baltimore Harbor, AN Chester River to Queenstown MD, AN Eastern Bay, AN Choptank River to Cambridge MD and the Little Choptank River, AN Patuxent River to Broomes Island MD, AN Tangier Sound and the inland waters surrounding Bloodsworth Island, AN Coastal waters from Fenwick Island DE to Chincoteague VA out 20 NM, AN

Official Bulletin

937
WOUS64 KWNS 201829
WOU4

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 604
NWS STORM PREDICTION CENTER NORMAN OK
230 PM EDT THU AUG 20 2026

SEVERE THUNDERSTORM WATCH 604 IS IN EFFECT UNTIL 1000 PM EDT
FOR THE FOLLOWING LOCATIONS

DCC001-210200-
/O.NEW.KWNS.SV.A.0604.260820T1830Z-260821T0200Z/

DC
.    DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE

DISTRICT OF COLUMBIA
$$

DEC001-003-005-210200-
/O.NEW.KWNS.SV.A.0604.260820T1830Z-260821T0200Z/

DE
.    DELAWARE COUNTIES INCLUDED ARE

KENT                 NEW CASTLE          SUSSEX
$$

MDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035-037-039-041-045-047-510-210200-
/O.NEW.KWNS.SV.A.0604.260820T1830Z-260821T0200Z/

MD
.    MARYLAND COUNTIES INCLUDED ARE

ANNE ARUNDEL         BALTIMORE           CALVERT
CAROLINE             CARROLL             CECIL
CHARLES              DORCHESTER          FREDERICK
HARFORD              HOWARD              KENT
MONTGOMERY           PRINCE GEORGES      QUEEN ANNE'S
SOMERSET             ST. MARYS           TALBOT
WICOMICO             WORCESTER

MARYLAND INDEPENDENT CITIES INCLUDED ARE

BALTIMORE CITY
$$

NCC015-029-041-053-073-091-131-139-143-210200-
/O.NEW.KWNS.SV.A.0604.260820T1830Z-260821T0200Z/

NC
.    NORTH CAROLINA COUNTIES INCLUDED ARE

BERTIE               CAMDEN              CHOWAN
CURRITUCK            GATES               HERTFORD
NORTHAMPTON          PASQUOTANK          PERQUIMANS
$$

NJC001-005-007-009-011-015-019-021-023-025-029-033-035-041-210200-
/O.NEW.KWNS.SV.A.0604.260820T1830Z-260821T0200Z/

NJ
.    NEW JERSEY COUNTIES INCLUDED ARE

ATLANTIC             BURLINGTON          CAMDEN
CAPE MAY             CUMBERLAND          GLOUCESTER
HUNTERDON            MERCER              MIDDLESEX
MONMOUTH             OCEAN               SALEM
SOMERSET             WARREN
$$

PAC001-011-017-029-045-071-075-077-091-095-101-133-210200-
/O.NEW.KWNS.SV.A.0604.260820T1830Z-260821T0200Z/

PA
.    PENNSYLVANIA COUNTIES INCLUDED ARE

ADAMS                BERKS               BUCKS
CHESTER              DELAWARE            LANCASTER
LEBANON              LEHIGH              MONTGOMERY
NORTHAMPTON          PHILADELPHIA        YORK
$$

VAC001-007-013-025-033-036-041-047-049-053-057-059-061-065-073-075-081-085-087-093-095-097-099-101-103-107-109-111-113-115-117-119-127-131-133-135-137-145-147-149-153-157-159-175-177-179-181-183-193-199-510-550-570-595-600-610-620-630-650-670-683-685-700-710-730-735-740-760-800-810-830-210200-
/O.NEW.KWNS.SV.A.0604.260820T1830Z-260821T0200Z/

VA
.    VIRGINIA COUNTIES INCLUDED ARE

ACCOMACK             AMELIA              ARLINGTON
BRUNSWICK            CAROLINE            CHARLES CITY
CHESTERFIELD         CULPEPER            CUMBERLAND
DINWIDDIE            ESSEX               FAIRFAX
FAUQUIER             FLUVANNA            GLOUCESTER
GOOCHLAND            GREENSVILLE         HANOVER
HENRICO              ISLE OF WIGHT       JAMES CITY
KING AND QUEEN       KING GEORGE         KING WILLIAM
LANCASTER            LOUDOUN             LOUISA
LUNENBURG            MADISON             MATHEWS
MECKLENBURG          MIDDLESEX           NEW KENT
NORTHAMPTON          NORTHUMBERLAND      NOTTOWAY
ORANGE               POWHATAN            PRINCE EDWARD
PRINCE GEORGE        PRINCE WILLIAM      RAPPAHANNOCK
RICHMOND             SOUTHAMPTON         SPOTSYLVANIA
STAFFORD             SURRY               SUSSEX
WESTMORELAND         YORK

VIRGINIA INDEPENDENT CITIES INCLUDED ARE

ALEXANDRIA           CHESAPEAKE          COLONIAL HEIGHTS
EMPORIA              FAIRFAX             FALLS CHURCH
FRANKLIN             FREDERICKSBURG      HAMPTON
HOPEWELL             MANASSAS            MANASSAS PARK
NEWPORT NEWS         NORFOLK             PETERSBURG
POQUOSON             PORTSMOUTH          RICHMOND
SUFFOLK              VIRGINIA BEACH      WILLIAMSBURG
$$

ANZ430-431-450-451-452-453-454-455-530-531-532-533-534-535-536-537-538-539-540-541-542-543-630-631-632-633-634-635-636-637-639-650-652-654-656-658-210200-
/O.NEW.KWNS.SV.A.0604.260820T1830Z-260821T0200Z/

CW

.    ADJACENT COASTAL WATERS INCLUDED ARE

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

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

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

CHESAPEAKE BAY FROM SMITH POINT TO WINDMILL POINT VA

CHESAPEAKE BAY FROM WINDMILL POINT TO NEW POINT COMFORT VA

CHESAPEAKE BAY FROM NEW POINT COMFORT TO LITTLE CREEK VA

CURRITUCK SOUND

CHESAPEAKE BAY FROM LITTLE CREEK VA TO CAPE HENRY VA INCLUDING
THE CHESAPEAKE BAY BRIDGE TUNNEL

RAPPAHANNOCK RIVER FROM URBANNA TO WINDMILL POINT

YORK RIVER

JAMES RIVER FROM JAMESTOWN TO THE JAMES RIVER BRIDGE

JAMES RIVER FROM JRB TO HRBT  INCLUDING THE ELIZABETH RIVER

COASTAL WATERS FROM FENWICK ISLAND DE TO CHINCOTEAGUE VA OUT 20
NM

COASTAL WATERS FROM CHINCOTEAGUE TO PARRAMORE ISLAND VA OUT 20 NM

COASTAL WATERS FROM PARRAMORE ISLAND TO CAPE CHARLES LIGHT VA OUT
20 NM

COASTAL WATERS FROM CAPE CHARLES LIGHT TO VIRGINIA-NORTH CAROLINA
BORDER OUT TO 20 NM

COASTAL WATERS FROM NC VA BORDER TO CURRITUCK BEACH LIGHT NC OUT
20 NM

$$
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