678
FZUS51 KLWX 040859
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
458 AM 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.
ANZ500-042300-
458 AM EDT MON MAY 4 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL REMAIN OVER THE WATERS THROUGH THIS AFTERNOON. A
FRONTAL SYSTEM WILL APPROACH FROM THE WEST BY MID WEEK. ANOTHER COLD
FRONT TRACKS ACROSS THE WATERS THIS WEEKEND. SMALL CRAFT ADVISORIES
MAY BE NEEDED MONDAY THROUGH WEDNESDAY.
ANZ535-042300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
458 AM EDT MON MAY 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH THIS
EVENING...
REST OF THE OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE...SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT
INCREASING 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 2 FT. A
CHANCE OF SHOWERS.
WED
SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SHOWERS.
WED NIGHT
NW WINDS 5 TO 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. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
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.
ANZ536-042300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
458 AM EDT MON MAY 4 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH THIS
EVENING...
REST OF THE OVERNIGHT
S WINDS 10 KT. WAVES 1 FT.
TODAY
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
WED
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
WED NIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW
5 TO 10 KT AFTER MIDNIGHT. WAVES 1 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 SW AFTER MIDNIGHT. WAVES 1 FT
OR LESS.
ANZ537-042300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
458 AM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF THE OVERNIGHT
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TODAY
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS
LIKELY.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
FRI...NW WINDS 10 TO 15 KT
BECOMING SW AROUND 5 KT. WAVES 1 FT OR
LESS.
ANZ530-042300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
458 AM EDT MON MAY 4 2026
REST OF THE OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE...SW 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 WITH GUSTS TO 30 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
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. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-042300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
458 AM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF THE OVERNIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TODAY
S WINDS 10 TO 15 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 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 WITH GUSTS TO 25 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
FRI...W WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 TO
2 FT...SUBSIDING TO FLAT AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-042300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
458 AM EDT MON MAY 4 2026
REST OF THE OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SW WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 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 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-042300-
CHESTER RIVER TO QUEENSTOWN MD-
458 AM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF THE OVERNIGHT
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
WED NIGHT
W WINDS 5 TO 10 KT. 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. WAVES 1 TO 2 FT
SUBSIDING TO FLAT AFTER
MIDNIGHT.
ANZ532-042300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
458 AM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF THE OVERNIGHT
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TODAY
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE MORNING.
WAVES 2 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING NW AFTER MIDNIGHT.
WAVES 1 TO 2 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI...W WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 FT OR
LESS.
ANZ540-042300-
EASTERN BAY-
458 AM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF THE OVERNIGHT
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
WED NIGHT
W WINDS 5 TO 10 KT. 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 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 FT OR
LESS.
ANZ533-042300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
458 AM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF THE OVERNIGHT
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TODAY
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE MORNING.
WAVES 2 FT.
TONIGHT
S WINDS 15 TO 20 KT. WAVES 2 FT.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS
LIKELY.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING NW AFTER MIDNIGHT.
GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 TO
2 FT...SUBSIDING TO FLAT AFTER MIDNIGHT.
ANZ541-042300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
458 AM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF THE OVERNIGHT
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TODAY
SW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE MORNING.
WAVES 1 TO 2 FT.
TONIGHT
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS
LIKELY.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING NW AFTER MIDNIGHT.
GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI...NW WINDS 10 TO 15 KT
BECOMING SW AROUND 5 KT. WAVES 1 TO
2 FT...SUBSIDING TO FLAT AFTER MIDNIGHT.
ANZ542-042300-
PATUXENT RIVER TO BROOMES ISLAND MD-
458 AM EDT MON MAY 4 2026
REST OF THE OVERNIGHT
S WINDS 10 KT. WAVES 1 FT.
TODAY
SW WINDS 10 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 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 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. WAVES 1 FT. SHOWERS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
FRI...NW WINDS 5 TO 10 KT
BECOMING SW. WAVES 1 FT.
ANZ534-042300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
458 AM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF THE OVERNIGHT
S WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
3 FT.
TODAY
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE MORNING.
WAVES 2 TO 3 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 WITH GUSTS TO 25 KT. WAVES 3 FT.
TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 4 FT.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS
LIKELY.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 TO 3 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS.
FRI...NW WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ543-042300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
458 AM EDT MON MAY 4 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
REST OF THE OVERNIGHT
S WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
2 FT.
TODAY
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE MORNING.
WAVES 1 TO 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 25 KT. WAVES 2 FT.
TUE NIGHT
S WINDS 20 TO 25 KT. WAVES 3 FT.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A CHANCE
OF SHOWERS.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI...NW WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT. WAVES 1 TO
2 FT.
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