756
FZUS51 KLWX 212358
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
758 PM EDT THU MAY 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-
758 PM EDT THU MAY 21 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A COLD FRONT WILL STALL SOUTH OF THE WATERS THROUGH SATURDAY BEFORE
LIFTING BACK TO THE NORTH SUNDAY INTO EARLY NEXT WEEK. SMALL CRAFT
ADVISORIES WILL LIKELY BE NEEDED MUCH OF THE TIME THROUGH SATURDAY.
ANZ535-220800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
758 PM EDT THU MAY 21 2026
TONIGHT
NE WINDS 10 KT. WAVES 1 FT. SHOWERS.
FRI
NE WINDS 10 KT. WAVES 1 FT. SHOWERS.
FRI NIGHT
NE WINDS 10 KT. WAVES 1 FT. SHOWERS.
SAT
E WINDS 10 KT. WAVES 1 FT. SHOWERS.
SAT NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
SUN
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING, THEN A CHANCE OF TSTMS THROUGH THE NIGHT. SHOWERS
LIKELY.
TUE
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY
THROUGH THE DAY. A CHANCE OF SHOWERS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-220800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
758 PM EDT THU MAY 21 2026
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
FRI
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
FRI NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SAT
E WINDS 10 KT. WAVES 1 FT. SHOWERS.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
SUN
N WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING, THEN A CHANCE OF TSTMS THROUGH THE NIGHT. SHOWERS
LIKELY.
TUE
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-220800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
758 PM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
FRI NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT. SHOWERS.
SAT NIGHT...E WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT AFTER
MIDNIGHT. WAVES 2 FT. SHOWERS.
SUN
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING. A CHANCE OF TSTMS. SHOWERS LIKELY.
TUE
SE WINDS AROUND 5 KT. WAVES FLAT. SHOWERS LIKELY. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-220800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
758 PM EDT THU MAY 21 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT FRIDAY THROUGH LATE
FRIDAY NIGHT...
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
NUMEROUS SHOWERS, MAINLY THIS EVENING.
FRI
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS.
FRI NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
TUE
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
ANZ531-220800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
758 PM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. NUMEROUS
SHOWERS.
FRI
E WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS
LIKELY.
FRI NIGHT
E WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
SAT
E WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
MON
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
TUE
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
ANZ538-220800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
758 PM EDT THU MAY 21 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT FRIDAY THROUGH LATE
FRIDAY NIGHT...
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
FRI
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
FRI NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS.
SAT
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS.
SUN
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
MON
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
TUE
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
ANZ539-220800-
CHESTER RIVER TO QUEENSTOWN MD-
758 PM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS WITH ISOLATED TSTMS THIS EVENING, THEN SHOWERS AFTER
MIDNIGHT.
FRI
E WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY.
FRI NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SHOWERS.
SAT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT. SHOWERS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
MON
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS IN THE
MORNING. SHOWERS LIKELY.
TUE
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-220800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
758 PM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
SHOWERS.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
SHOWERS.
FRI NIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT. SHOWERS.
SAT
E WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS.
SUN
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
MON
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS IN THE
MORNING. SHOWERS LIKELY.
TUE
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
ANZ540-220800-
EASTERN BAY-
758 PM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. NUMEROUS
SHOWERS WITH ISOLATED TSTMS THIS EVENING, THEN SHOWERS AFTER
MIDNIGHT.
FRI
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS
LIKELY.
FRI NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT. SHOWERS.
SAT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 TO 2 FT. SHOWERS.
SUN
NE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
MON
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS IN THE MORNING. SHOWERS LIKELY.
TUE
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-220800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
758 PM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
TONIGHT
NE WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. SHOWERS.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
FRI NIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
SAT
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS.
SUN
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.
SUN NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS IN THE MORNING, THEN SHOWERS LIKELY.
TUE
SE WINDS AROUND 5 KT. WAVES FLAT. SHOWERS LIKELY THROUGH THE
DAY. A CHANCE OF SHOWERS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-220800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
758 PM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
FRI NIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS.
SUN
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.
SUN NIGHT
NE WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
MON
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS IN THE MORNING. SHOWERS LIKELY.
TUE
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-220800-
PATUXENT RIVER TO BROOMES ISLAND MD-
758 PM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
FRI
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
FRI NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
SUN
N WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
SUN NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING. A CHANCE OF TSTMS. SHOWERS LIKELY.
TUE
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY
THROUGH THE DAY. A CHANCE OF SHOWERS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-220800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
758 PM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
TONIGHT
NE WINDS 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
FRI NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
SAT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS.
SAT NIGHT...E WINDS 10 TO 15 KT
BECOMING SE AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. SHOWERS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
SUN NIGHT
E WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
MON
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF TSTMS.
SHOWERS LIKELY.
TUE
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-220800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
758 PM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SCATTERED SHOWERS THIS EVENING, THEN SHOWERS AFTER MIDNIGHT.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
FRI NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SAT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
SUN NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
MON
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF TSTMS.
SHOWERS LIKELY.
TUE
S WINDS AROUND 5 KT. WAVES FLAT. SHOWERS LIKELY. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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