282
FZUS51 KLWX 212058
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
458 PM EDT MON SEP 21 2026
TIDAL POTOMAC RIVER AND MARYLAND PORTION OF CHESAPEAKE BAY.
FORECASTS OF WAVE HEIGHTS DO NOT INCLUDE EFFECTS OF WIND DIRECTION
RELATIVE TO TIDAL CURRENTS. EXPECT HIGHER WAVES WHEN WINDS ARE
BLOWING AGAINST THE TIDAL FLOW. WAVES FLAT WHERE WATERS ARE ICED OVER.
ANZ500-220800-
458 PM EDT MON SEP 21 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A STRONG AREA OF HIGH PRESSURE WILL REMAIN IN PLACE TO OUR NORTH
THROUGH MUCH OF THE WEEK LEADING TO A PROLONGED PERIOD OF ONSHORE
FLOW. SEVERAL WAVES OF LOW PRESSURE MAY TRACK ALONG A STALLED FRONT
TO OUR SOUTH DURING THIS TIME. SMALL CRAFT ADVISORIES WILL LIKELY BE
NEEDED FOR MUCH OF THE WEDNESDAY THROUGH FRIDAY TIME PERIOD, AND A
FEW LOW-END GALE GUSTS CAN'T BE RULED OUT.
ANZ535-220800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
REST OF THIS AFTERNOON
NE WINDS 10 KT. WAVES 1 FT. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
TUE
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS WITH
A CHANCE OF TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
RAIN. PATCHY FOG.
WED
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. RAIN.
WED NIGHT
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF RAIN.
THU
N WINDS 10 TO 15 KT. WAVES 1 FT.
FRI
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-220800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
REST OF THIS AFTERNOON
NE WINDS 10 KT. WAVES 1 FT. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS
WITH A CHANCE OF TSTMS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
RAIN WITH A CHANCE OF TSTMS. PATCHY FOG.
WED
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. RAIN.
PATCHY FOG.
WED NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF RAIN.
THU
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
FRI
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-220800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
REST OF THIS AFTERNOON
NE WINDS 10 KT. WAVES 2 FT.
TONIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT. GUSTS UP TO 30 KT. WAVES 4 FT. SHOWERS
WITH A CHANCE OF TSTMS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT.
RAIN LIKELY WITH A CHANCE OF TSTMS.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT. RAIN.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 40 KT. WAVES 5 FT. A
CHANCE OF RAIN.
THU...NE WINDS 20 TO 25 KT. WAVES 4 FT
SUBSIDING TO 3 FT AFTER
MIDNIGHT.
FRI
N WINDS 15 TO 20 KT. WAVES 3 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-220800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
REST OF THIS AFTERNOON
NE WINDS 10 KT. WAVES 1 FT. A CHANCE OF
SHOWERS.
TONIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS LIKELY.
WED
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A
CHANCE OF RAIN.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
THU
NE WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
FRI
N WINDS 15 TO 20 KT. WAVES 2 FT.
ANZ531-220800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
REST OF THIS AFTERNOON
NE WINDS 10 KT. WAVES 2 FT. A CHANCE OF
SHOWERS.
TONIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
A CHANCE OF SHOWERS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN LIKELY.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. RAIN
LIKELY.
WED NIGHT
NE WINDS 20 KT WITH GUSTS TO 35 KT. WAVES 4 FT.
THU
NE WINDS 15 TO 20 KT. WAVES 3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 3 FT.
ANZ538-220800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
REST OF THIS AFTERNOON
NE WINDS 10 KT. WAVES 1 FT. A CHANCE OF
SHOWERS.
TONIGHT...E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT
INCREASING TO
25 KT LATE. WAVES 2 FT. SHOWERS.
TUE
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
PATCHY FOG. VSBY 1 NM OR LESS.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
RAIN LIKELY.
WED
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. RAIN
LIKELY.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
THU
NE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
FRI
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ539-220800-
CHESTER RIVER TO QUEENSTOWN MD-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
REST OF THIS AFTERNOON
NE WINDS 10 KT. WAVES 1 FT. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SHOWERS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. RAIN LIKELY.
WED
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. RAIN
LIKELY.
WED NIGHT
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU
NE WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
FRI
N WINDS 15 TO 20 KT. WAVES 3 FT.
ANZ532-220800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
REST OF THIS AFTERNOON
NE WINDS 15 KT. WAVES 2 FT. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
SHOWERS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
RAIN LIKELY.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT. RAIN
LIKELY.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT.
THU
NE WINDS 20 TO 25 KT. WAVES 3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 3 FT.
ANZ540-220800-
EASTERN BAY-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
REST OF THIS AFTERNOON
NE WINDS 10 KT. WAVES 1 FT. A SLIGHT
CHANCE OF SHOWERS.
TONIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS LIKELY.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
SHOWERS.
TUE NIGHT
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. RAIN
LIKELY.
WED NIGHT
NE WINDS 20 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
THU
NE WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
FRI
N WINDS 15 TO 20 KT. WAVES 2 FT.
ANZ533-220800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
REST OF THIS AFTERNOON
NE WINDS 15 KT. WAVES 2 FT.
TONIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS LIKELY.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SHOWERS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
RAIN LIKELY.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT. RAIN
LIKELY.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT. A
CHANCE OF RAIN.
THU
NE WINDS 20 TO 25 KT. WAVES 4 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 4 FT.
ANZ541-220800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
REST OF THIS AFTERNOON
NE WINDS 15 KT. WAVES 1 FT.
TONIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS LIKELY.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN LIKELY.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT. RAIN
LIKELY.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
THU
NE WINDS 20 TO 25 KT. WAVES 3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 3 FT.
ANZ542-220800-
PATUXENT RIVER TO BROOMES ISLAND MD-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
REST OF THIS AFTERNOON
NE WINDS 10 KT. WAVES 1 FT.
TONIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT. SHOWERS
WITH A CHANCE OF TSTMS.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
RAIN LIKELY.
WED
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT. RAIN.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT. A
CHANCE OF RAIN.
THU
NE WINDS 15 TO 20 KT. WAVES 1 FT.
FRI
N WINDS 15 TO 20 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-220800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY
AFTERNOON...
REST OF THIS AFTERNOON
NE WINDS 15 KT. WAVES 2 FT.
TONIGHT
E WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF SHOWERS.
TUE
E WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT. SHOWERS
LIKELY WITH A CHANCE OF TSTMS.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT.
RAIN LIKELY.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 40 KT. WAVES 5 FT. RAIN.
WED NIGHT
NE WINDS 25 KT WITH GUSTS TO 40 KT. WAVES 6 FT. A
CHANCE OF RAIN.
THU
NE WINDS 20 TO 25 KT. WAVES 4 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 4 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-220800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
458 PM EDT MON SEP 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY
AFTERNOON...
REST OF THIS AFTERNOON
NE WINDS 15 KT. WAVES 1 FT.
TONIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT. GUSTS UP TO 30 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN LIKELY.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 40 KT. WAVES 3 FT. RAIN
LIKELY.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 40 KT. WAVES 3 FT. A
CHANCE OF RAIN.
THU
NE WINDS 20 TO 25 KT. WAVES 3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 2 TO 3 FT.
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