721
FZUS51 KLWX 292059
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
459 PM EDT WED APR 29 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.
ANZ500-300800-
459 PM EDT WED APR 29 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A COLD FRONT WILL CROSS THE WATERS THIS EVENING. THIS MAY BRING SOME
STRONG TO SEVERE THUNDERSTORMS TO THE WATERWAYS. BEHIND THE COLD
FRONT, A TROUGH OF LOW PRESSURE LINGERS THROUGH THE REMAINDER OF THE
WEEK. A COASTAL LOW TRACKS OFF THE CAROLINAS ON SATURDAY BEFORE
HIGH PRESSURE BUILDS TO THE SOUTHWEST TO FINISH THE WEEKEND. SMALL
CRAFT ADVISORIES WILL BE LIKELY THURSDAY NIGHT AND POSSIBLE
SATURDAY NIGHT INTO SUNDAY.
ANZ535-300800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. SHOWERS LIKELY WITH A SLIGHT CHANCE OF TSTMS.
TONIGHT...S WINDS 5 TO 10 KT
BECOMING NW 10 TO 15 KT WITH GUSTS
TO 25 KT AFTER MIDNIGHT. WAVES 1 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW AROUND 5 KT AFTER
MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-300800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING W IN THE LATE EVENING AND
EARLY MORNING, THEN BECOMING NW LATE. GUSTS UP TO 20 KT. WAVES 1 TO
2 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN...NW WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-300800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING W AFTER MIDNIGHT. GUSTS UP
TO 25 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT...SE WINDS 5 TO 10 KT
BECOMING NE AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS LIKELY THROUGH THE NIGHT. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 FT.
ANZ530-300800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 10 KT. WAVES 1 FT. A CHANCE OF
SHOWERS.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW AROUND 5 KT AFTER
MIDNIGHT. WAVES 1 FT.
ANZ531-300800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT, THEN
BECOMING NW LATE. GUSTS UP TO 20 KT. WAVES 2 FT. SHOWERS.
THU
NW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
SAT
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN...NW WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ538-300800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT. A CHANCE OF SHOWERS.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW 5 KT AFTER MIDNIGHT. WAVES
1 FT OR LESS.
ANZ539-300800-
CHESTER RIVER TO QUEENSTOWN MD-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT, THEN
BECOMING NW LATE. GUSTS UP TO 20 KT. WAVES 2 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
ANZ532-300800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
3 FT. A CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. WAVES 2 TO 3 FT. SHOWERS.
THU
NW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ540-300800-
EASTERN BAY-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A CHANCE OF SHOWERS.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT, THEN
BECOMING NW LATE. GUSTS UP TO 20 KT. WAVES 2 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 FT.
ANZ533-300800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING W AFTER MIDNIGHT. GUSTS UP
TO 25 KT. WAVES 2 TO 3 FT. SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
FRI NIGHT...S WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ541-300800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT AFTER
MIDNIGHT, THEN BECOMING NW 15 TO 20 KT LATE. GUSTS UP TO 25 KT.
WAVES 2 FT. SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ542-300800-
PATUXENT RIVER TO BROOMES ISLAND MD-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT. A CHANCE OF SHOWERS.
TONIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS UP
TO 20 KT. WAVES 1 FT. SHOWERS.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN...W WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES 1 FT.
ANZ534-300800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING W AFTER MIDNIGHT. GUSTS UP
TO 25 KT. WAVES 3 FT. SHOWERS.
THU...NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT
DIMINISHING TO
15 KT WITH GUSTS TO 20 KT LATE. WAVES 3 FT.
THU NIGHT
NW WINDS 15 TO 20 KT. WAVES 3 FT.
FRI...NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING SW 5 TO
10 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE MORNING, THEN SHOWERS LIKELY THROUGH THE NIGHT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ543-300800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
459 PM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
REST OF THIS AFTERNOON
SE WINDS 20 KT WITH GUSTS TO 25 KT. WAVES
2 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING NW LATE. GUSTS UP TO
25 KT. WAVES 2 FT. SHOWERS.
THU...NW WINDS 15 TO 20 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT LATE. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
FRI...NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING W 5 TO
10 KT IN THE AFTERNOON. WAVES 1 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE MORNING, THEN SHOWERS LIKELY THROUGH THE NIGHT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 TO
2 FT.
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