423
FZUS51 KLWX 220857
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 AM EDT TUE SEP 22 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.
ANZ500-222300-
457 AM EDT TUE SEP 22 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. A STRONG COASTAL LOW WILL THEN DEVELOP IN THE ATLANTIC TOWARD
THE END OF THE WEEK. SMALL CRAFT ADVISORIES WILL LIKELY BE NEEDED
FOR MUCH OF THE THURSDAY THROUGH SATURDAY TIME PERIOD, AND A FEW
LOW- END GALE GUSTS CAN'T BE RULED OUT.
ANZ535-222300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF THE OVERNIGHT
NE WINDS 10 KT. WAVES 1 FT. SHOWERS WITH A
SLIGHT CHANCE OF TSTMS.
TODAY
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
PATCHY FOG. VSBY 1 NM OR LESS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS. PATCHY FOG. VSBY 1 TO 3 NM.
WED
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. SHOWERS
LIKELY.
WED NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
THU
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
N WINDS 10 TO 15 KT. WAVES 1 FT.
SAT
NW WINDS 10 TO 15 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-222300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF THE OVERNIGHT
E WINDS 10 KT. WAVES 1 FT. SHOWERS WITH A
SLIGHT CHANCE OF TSTMS.
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS. PATCHY FOG. VSBY 1 NM OR LESS.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS. PATCHY FOG. VSBY 1 NM OR LESS.
WED
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS
LIKELY. PATCHY FOG.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
THU
NE WINDS 15 TO 20 KT. WAVES 2 FT.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
N WINDS 10 TO 15 KT. WAVES 1 FT.
SAT
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-222300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
REST OF THE OVERNIGHT
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TODAY...E WINDS 15 TO 20 KT. GUSTS UP TO 25 KT
INCREASING TO
30 KT LATE. WAVES 3 FT. SHOWERS. PATCHY FOG. VSBY 1 NM OR LESS.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 5 FT.
SHOWERS LIKELY.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT. SHOWERS
LIKELY.
WED NIGHT
NE WINDS 25 TO 30 KT. WAVES 5 FT. A CHANCE OF SHOWERS.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
FRI
N WINDS 15 TO 20 KT. WAVES 3 FT.
SAT
N WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-222300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF THE OVERNIGHT
E WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT. SHOWERS LIKELY.
TODAY
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
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 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
WED NIGHT
NE WINDS 20 TO 25 KT. WAVES 2 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
N WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 1 TO 2 FT.
SAT
N WINDS 15 TO 20 KT. WAVES 2 FT.
ANZ531-222300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF THE OVERNIGHT
E WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. SHOWERS.
TODAY
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
TONIGHT
NE WINDS 20 TO 25 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. A
CHANCE OF SHOWERS.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 3 FT.
SAT
N WINDS 20 TO 25 KT. WAVES 3 FT.
ANZ538-222300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF THE OVERNIGHT
E WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT. SHOWERS.
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
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 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
N WINDS 10 TO 15 KT. WAVES 1 FT.
SAT
N WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
ANZ539-222300-
CHESTER RIVER TO QUEENSTOWN MD-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF THE OVERNIGHT
E WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT. SHOWERS.
TODAY
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS.
TONIGHT
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 SHOWERS.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
THU NIGHT
N WINDS 15 TO 20 KT. WAVES 2 FT.
FRI
N WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
SAT
N WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
ANZ532-222300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF THE OVERNIGHT
E WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. SHOWERS.
TODAY
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SHOWERS.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT. A
CHANCE OF SHOWERS.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU NIGHT
N WINDS 20 TO 25 KT. WAVES 3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 3 FT.
SAT
N WINDS 20 TO 25 KT. WAVES 3 FT.
ANZ540-222300-
EASTERN BAY-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
REST OF THE OVERNIGHT
E WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT. SHOWERS.
TODAY
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 2 FT.
SAT
N WINDS 20 TO 25 KT. WAVES 2 FT.
ANZ533-222300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
REST OF THE OVERNIGHT
E WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TODAY
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS LIKELY.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SHOWERS LIKELY.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT. SHOWERS
LIKELY.
WED NIGHT
NE WINDS 25 TO 30 KT. WAVES 5 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 4 FT.
SAT
N WINDS 20 TO 25 KT. WAVES 3 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-222300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
REST OF THE OVERNIGHT
E WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT. SHOWERS.
TODAY
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
SHOWERS.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS LIKELY.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. SHOWERS
LIKELY.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU NIGHT
N WINDS 20 TO 25 KT. WAVES 2 TO 3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 3 FT.
SAT
N WINDS 20 TO 25 KT. WAVES 3 FT.
ANZ542-222300-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
REST OF THE OVERNIGHT
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT. SHOWERS LIKELY WITH A SLIGHT CHANCE OF TSTMS.
TODAY...NE WINDS 15 TO 20 KT. GUSTS UP TO 25 KT
INCREASING TO
30 KT LATE. WAVES 1 FT. SHOWERS. PATCHY FOG. VSBY 1 NM OR LESS.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
SHOWERS LIKELY.
WED
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT. SHOWERS
LIKELY.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
FRI
N WINDS 15 TO 20 KT. WAVES 1 FT.
SAT...N WINDS 15 TO 20 KT
DIMINISHING TO 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-222300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
REST OF THE OVERNIGHT
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TODAY
E WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS LIKELY.
TONIGHT
NE WINDS 25 TO 30 KT. WAVES 5 FT. SHOWERS LIKELY.
WED
NE WINDS 25 TO 30 KT. WAVES 5 FT. SHOWERS LIKELY.
WED NIGHT
NE WINDS 25 TO 30 KT. WAVES 5 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 5 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 4 FT.
SAT...N WINDS 20 TO 25 KT. WAVES 4 FT
SUBSIDING TO 3 FT AFTER
MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-222300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 AM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
REST OF THE OVERNIGHT
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS.
TODAY
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS LIKELY.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT. SHOWERS
LIKELY.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 3 FT.
SAT
N WINDS 20 TO 25 KT. WAVES 2 TO 3 FT.
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