703
FZUS51 KLWX 041828
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 PM EDT MON MAY 4 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.
ANZ500-050800-
228 PM EDT MON MAY 4 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A FRONTAL SYSTEM WILL CROSS THE WATERS EARLY THURSDAY MORNING.
ANOTHER COLD FRONT TRACKS ACROSS THE WATERS THIS WEEKEND. SMALL
CRAFT ADVISORIES MAY BE NEEDED TUESDAY NIGHT THROUGH THE END OF THE
WORK WEEK.
ANZ535-050800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING...
THIS AFTERNOON
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE
SW WINDS 10 TO 15 KT. GUSTS UP TO 30 KT IN THE AFTERNOON.
WAVES 1 TO 2 FT.
TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
WED NIGHT
W WINDS 10 KT. GUSTS UP TO 20 KT IN THE EVENING. WAVES
1 FT. SHOWERS WITH A CHANCE OF TSTMS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
FRI...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-050800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING...
THIS AFTERNOON
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE
SW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
WAVES 1 TO 2 FT.
TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
WED NIGHT
W WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS WITH A CHANCE OF TSTMS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
FRI
SW WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-050800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TUE...SW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT
INCREASING TO
30 KT LATE. WAVES 2 TO 3 FT.
TUE NIGHT
S WINDS 15 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS.
WED NIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
AFTER MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE OF TSTMS.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS THROUGH THE DAY, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.
FRI...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-050800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING...
THIS AFTERNOON
SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES
1 TO 2 FT.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT EARLY IN THE
EVENING. WAVES 1 FT.
TUE...S WINDS 15 TO 20 KT. GUSTS UP TO 20 KT
INCREASING TO 30 KT
IN THE AFTERNOON. WAVES 1 TO 2 FT.
TUE NIGHT...S WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING
TO 20 KT AFTER MIDNIGHT. WAVES 2 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
WED NIGHT
W WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI...W WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT OR
LESS.
ANZ531-050800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING...
THIS AFTERNOON
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT EARLY IN THE
EVENING. WAVES 2 FT.
TUE...S WINDS 15 TO 20 KT. GUSTS UP TO 20 KT
INCREASING TO 30 KT
IN THE AFTERNOON. WAVES 2 TO 3 FT.
TUE NIGHT...S WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING
TO 20 KT AFTER MIDNIGHT. WAVES 3 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
SHOWERS.
WED NIGHT
W WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI...W WINDS 5 TO 10 KT
BECOMING SW. WAVES 1 FT.
ANZ538-050800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING...
THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
WAVES 1 TO 2 FT.
TUE NIGHT...S WINDS 15 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SHOWERS.
WED NIGHT
W WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI...W WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 FT
OR LESS.
ANZ539-050800-
CHESTER RIVER TO QUEENSTOWN MD-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING...
THIS AFTERNOON
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TONIGHT...S WINDS 15 KT. GUSTS UP TO 25 KT
DIMINISHING TO 20 KT
IN THE LATE EVENING AND OVERNIGHT. WAVES 2 FT.
TUE...S WINDS 15 TO 20 KT. GUSTS UP TO 20 KT
INCREASING TO 30 KT
IN THE AFTERNOON. WAVES 2 TO 3 FT.
TUE NIGHT...S WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING
TO 20 KT AFTER MIDNIGHT. WAVES 2 TO 3 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
WED NIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING NW
AFTER MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
ANZ532-050800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
THIS AFTERNOON
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TONIGHT...S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT
DIMINISHING TO
20 KT IN THE LATE EVENING AND OVERNIGHT. WAVES 2 FT.
TUE...S WINDS 15 TO 20 KT. GUSTS UP TO 20 KT
INCREASING TO 30 KT
IN THE AFTERNOON. WAVES 2 FT...BUILDING TO 4 FT IN THE AFTERNOON.
TUE NIGHT...S WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING
TO 20 KT AFTER MIDNIGHT. WAVES 3 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS
LIKELY.
WED NIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING NW
AFTER MIDNIGHT. WAVES 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
FRI...W WINDS 10 KT
BECOMING S. WAVES 1 FT.
ANZ540-050800-
EASTERN BAY-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
THIS AFTERNOON
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES
1 TO 2 FT.
TONIGHT...S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT
DIMINISHING TO
20 KT IN THE LATE EVENING AND OVERNIGHT. WAVES 2 FT.
TUE...S WINDS 15 TO 20 KT. GUSTS UP TO 20 KT
INCREASING TO 30 KT
IN THE AFTERNOON. WAVES 2 FT.
TUE NIGHT...S WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING
TO 20 KT AFTER MIDNIGHT. WAVES 2 FT.
WED
S WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS
LIKELY.
WED NIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
AFTER MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
FRI...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
ANZ533-050800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE...S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT
INCREASING TO 30 KT
LATE. WAVES 2 TO 3 FT.
TUE NIGHT
S WINDS 15 TO 20 KT. GUSTS UP TO 30 KT IN THE EVENING.
WAVES 3 FT.
WED
S WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS
LIKELY.
WED NIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
AFTER MIDNIGHT. WAVES 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
SHOWERS.
THU
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
ANZ541-050800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE...S WINDS 15 KT. GUSTS UP TO 25 KT
INCREASING TO 30 KT LATE.
WAVES 2 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT.
WED
S WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS
LIKELY.
WED NIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
AFTER MIDNIGHT. WAVES 1 TO 2 FT. SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
FRI...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
ANZ542-050800-
PATUXENT RIVER TO BROOMES ISLAND MD-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING...
THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE
SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
TUE NIGHT
S WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
WED
S WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. SHOWERS
LIKELY.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS IN THE
MORNING. SHOWERS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI...W WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-050800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
TUE...S WINDS 15 TO 20 KT. GUSTS UP TO 20 KT
INCREASING TO 30 KT
IN THE AFTERNOON. WAVES 3 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A CHANCE
OF SHOWERS.
WED NIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
AFTER MIDNIGHT. WAVES 2 TO 3 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE
OF TSTMS THROUGH THE DAY, THEN A CHANCE OF SHOWERS THROUGH THE
NIGHT.
FRI...NW WINDS 10 TO 15 KT
BECOMING S. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-050800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
228 PM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
THIS AFTERNOON
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS.
WED NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. GUSTS
UP TO 25 KT. WAVES 1 TO 2 FT. SHOWERS.
THU
N WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS THROUGH THE DAY. A CHANCE OF SHOWERS THROUGH THE NIGHT.
FRI...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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