383
FZUS51 KLWX 290859
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
458 AM 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.
ANZ500-292300-
458 AM EDT WED APR 29 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A WARM FRONT WILL SLOWLY APPROACH FROM THE SOUTHWEST TODAY BEFORE A
STRONGER COLD FRONT CROSSES 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 ARE LIKELY NEEDED BEHIND THE COLD FRONT FOR
MUCH OF THURSDAY, AND PERHAPS AGAIN LATE IN THE WEEKEND.
ANZ535-292300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT. SHOWERS LIKELY.
TONIGHT...S WINDS 5 TO 10 KT
BECOMING NW 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
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 WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...W 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.
ANZ536-292300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT. SHOWERS LIKELY.
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 WITH A CHANCE OF TSTMS.
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
DIMINISHING
TO 5 KT AFTER MIDNIGHT. WAVES 1 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-292300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 10 KT. WAVES 1 FT.
TODAY
SE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY.
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 AND TSTMS.
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 1 TO
2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NE 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. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-292300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES FLAT.
TODAY
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
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 WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT
NW WINDS AROUND 5 KT. WAVES 1 FT.
SUN...W WINDS 10 TO 15 KT
BECOMING SW AROUND 5 KT AFTER MIDNIGHT.
WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-292300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 TO 2 FT. SHOWERS LIKELY.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT, THEN
BECOMING NW LATE. GUSTS UP TO 20 KT. WAVES 2 FT. SHOWERS WITH A
CHANCE OF TSTMS.
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 1 TO 2 FT.
FRI
W WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...W WINDS 10 TO 15 KT
BECOMING SW 5 KT AFTER MIDNIGHT. WAVES
1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-292300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES FLAT.
TODAY
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS LIKELY.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
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 20 KT IN THE EVENING.
WAVES 1 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 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-292300-
CHESTER RIVER TO QUEENSTOWN MD-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 TO 2 FT. SHOWERS LIKELY.
TONIGHT...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT, THEN
BECOMING NW LATE. GUSTS UP TO 20 KT. WAVES 2 FT. SHOWERS WITH A
CHANCE OF TSTMS.
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 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-292300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
TODAY
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY.
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 WITH A CHANCE
OF TSTMS.
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 1 TO
2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-292300-
EASTERN BAY-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 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 WITH A
CHANCE OF TSTMS.
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 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-292300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
TODAY
SE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 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 WITH A CHANCE OF TSTMS.
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 1 TO
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 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-292300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
TODAY
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. A
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 WITH A CHANCE OF TSTMS.
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 1 TO
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 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-292300-
PATUXENT RIVER TO BROOMES ISLAND MD-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
TODAY
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 FT. SHOWERS LIKELY.
TONIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS UP
TO 20 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
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
W WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
N WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-292300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
S WINDS 10 KT. WAVES 1 FT.
TODAY...SE WINDS 15 TO 20 KT. GUSTS UP TO 20 KT
INCREASING TO
25 KT LATE. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
TONIGHT...S WINDS 15 TO 20 KT
BECOMING W AFTER MIDNIGHT. GUSTS UP
TO 25 KT. WAVES 3 FT. SHOWERS WITH A CHANCE OF TSTMS.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-292300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
458 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF THE OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
TODAY
SE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
A 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 WITH GUSTS TO 30 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...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 FT. A CHANCE OF SHOWERS.
SUN...NW WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT. WAVES 1 FT.
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