137
FZUS51 KLWX 290629
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 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.
ANZ500-292000-
228 AM EDT WED APR 29 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE EXITS OFF THE ATLANTIC COAST BEFORE THE NEXT FRONTAL
SYSTEM SLOWLY APPROACHES FROM THE WEST. THE ASSOCIATED COLD FRONT
CROSSES THE WATERS BY LATE WEDNESDAY BEFORE A TROUGH OF LOW PRESSURE
LINGERS THROUGH THE REMAINDER OF THE WEEK. SMALL CRAFT ADVISORIES
ARE LIKELY NEEDED BY WEDNESDAY AFTERNOON DUE TO INCREASING
SOUTHEASTERLY WINDS. HAZARDOUS MARINE CONDITIONS LIKELY PERSIST
THROUGH THE LATE WEEK TIMEFRAME.
ANZ535-292000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT. SHOWERS LIKELY.
WED NIGHT...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.
ANZ536-292000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT. SHOWERS LIKELY.
WED NIGHT...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.
ANZ537-292000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
S WINDS 10 KT. WAVES 1 FT.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY.
WED NIGHT...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.
ANZ530-292000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 5 KT. WAVES FLAT.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WED NIGHT...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.
ANZ531-292000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 TO 2 FT. SHOWERS LIKELY.
WED NIGHT...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.
ANZ538-292000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
WED NIGHT...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.
ANZ539-292000-
CHESTER RIVER TO QUEENSTOWN MD-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 TO 2 FT. SHOWERS LIKELY.
WED NIGHT...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.
ANZ532-292000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
WED
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY.
WED NIGHT...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 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-292000-
EASTERN BAY-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS.
WED NIGHT...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.
ANZ533-292000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
WED
SE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS.
WED NIGHT...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.
ANZ541-292000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
WED
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS.
WED NIGHT...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.
ANZ542-292000-
PATUXENT RIVER TO BROOMES ISLAND MD-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 FT. SHOWERS LIKELY.
WED NIGHT...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.
ANZ534-292000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
S WINDS 10 KT. WAVES 1 TO 2 FT.
WED...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.
WED NIGHT...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.
ANZ543-292000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
228 AM EDT WED APR 29 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
WED
SE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS.
WED NIGHT...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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