507
FZUS51 KLWX 221639
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1239 PM 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.
ANZ500-230800-
1239 PM 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.
ANZ535-230800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
THIS AFTERNOON
NE WINDS 10 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
RAIN WITH POSSIBLE TSTMS AND DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT...NE WINDS 5 TO 10 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT LATE. WAVES 1 FT. RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY
1 TO 3 NM.
WED
NE WINDS 10 KT WITH GUSTS TO 25 KT. WAVES 1 FT. RAIN LIKELY.
WED NIGHT
NE WINDS 5 TO 10 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
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.
ANZ536-230800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
RAIN WITH POSSIBLE TSTMS AND DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
WED
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. RAIN.
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 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.
ANZ537-230800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
THIS AFTERNOON
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
RAIN WITH POSSIBLE TSTMS AND DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 5 FT.
RAIN LIKELY WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
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 40 KT. WAVES 5 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 35 KT. WAVES 4 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
FRI
N WINDS 20 TO 25 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.
ANZ530-230800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
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. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT IN THE AFTERNOON. WAVES 2 FT.
THU NIGHT...N WINDS 5 TO 10 KT
INCREASING TO 15 TO 20 KT WITH
GUSTS TO 25 KT AFTER MIDNIGHT. WAVES 1 FT.
FRI
N WINDS 20 TO 25 KT. WAVES 1 TO 2 FT.
SAT
N WINDS 15 TO 20 KT. WAVES 2 FT.
ANZ531-230800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
THIS AFTERNOON
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
WED
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A
CHANCE OF RAIN.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU
NE WINDS 15 TO 20 KT. GUSTS UP TO 30 KT IN THE MORNING. 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.
ANZ538-230800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. RAIN WITH
PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
WED
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF RAIN.
WED NIGHT
NE WINDS 10 TO 15 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.
ANZ539-230800-
CHESTER RIVER TO QUEENSTOWN MD-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
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 TO
3 FT.
THU...NE WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
THU NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 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.
ANZ532-230800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
THIS AFTERNOON
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT. A
CHANCE OF RAIN.
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
NE 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.
ANZ540-230800-
EASTERN BAY-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
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 WITH GUSTS TO 30 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.
ANZ533-230800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
THIS AFTERNOON
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES
4 FT. RAIN WITH POSSIBLE DRIZZLE AND TSTMS. PATCHY FOG. VSBY 1 TO
3 NM.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 40 KT. WAVES 4 FT. RAIN
LIKELY.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 40 KT. WAVES 5 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 4 FT.
THU NIGHT
NE 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.
ANZ541-230800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
THIS AFTERNOON
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
RAIN LIKELY WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT. A
CHANCE OF RAIN.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT.
THU...NE WINDS 20 TO 25 KT. GUSTS UP TO 35 KT
DIMINISHING TO
25 KT IN THE AFTERNOON. WAVES 3 FT.
THU NIGHT
NE 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.
ANZ542-230800-
PATUXENT RIVER TO BROOMES ISLAND MD-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
THIS AFTERNOON
NE WINDS 15 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
RAIN WITH POSSIBLE TSTMS AND DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
WED
NE WINDS 15 TO 20 KT WITH GUSTS TO 35 KT. WAVES 1 FT. RAIN
LIKELY.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 35 KT. WAVES 1 FT.
THU
NE WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 FT.
THU NIGHT
NE 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.
ANZ534-230800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
THIS AFTERNOON
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES
4 FT. RAIN WITH POSSIBLE TSTMS AND DRIZZLE. PATCHY FOG. VSBY 1 TO
3 NM.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 5 FT.
RAIN LIKELY WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT. A
CHANCE OF RAIN.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 40 KT. WAVES 5 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 5 FT.
THU NIGHT
NE 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.
ANZ543-230800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1239 PM EDT TUE SEP 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
...GALE WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE
WEDNESDAY NIGHT...
THIS AFTERNOON
NE WINDS 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. RAIN LIKELY WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A
CHANCE OF RAIN WITH PATCHY DRIZZLE. PATCHY FOG. VSBY 1 TO 3 NM.
WED
NE WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT. A
CHANCE OF RAIN.
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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