764
FZUS51 KLWX 192057
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
456 PM EDT TUE MAY 19 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.
ANZ500-200800-
456 PM EDT TUE MAY 19 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
WINDS SUBSIDE LATE TONIGHT. ADDITIONAL SMALL CRAFT ADVISORIES MAY BE
NEEDED THROUGH THURSDAY AS A COLD FRONT CROSSES THE WATERS. THE
FRONT WILL BRING SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS
WEDNESDAY AFTERNOON AND EVENING. SPECIAL MARINE WARNINGS MAY BE
NEEDED FOR STRONGER THUNDERSTORMS DURING THIS TIME. NO MARINE
HAZARDS ARE EXPECTED THURSDAY WITH SMALL CRAFT CONDITIONS RETURNING
FRIDAY INTO THE WEEKEND.
ANZ535-200800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
456 PM EDT TUE MAY 19 2026
REST OF THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT. ISOLATED
SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
THU
NE WINDS 10 KT. WAVES 1 FT. SHOWERS.
THU NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS, MAINLY IN THE
MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-200800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
456 PM EDT TUE MAY 19 2026
REST OF THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
THU
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
THU NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SAT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-200800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
THU NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS LIKELY.
FRI
E WINDS 10 TO 15 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-200800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
REST OF THIS AFTERNOON
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. SCATTERED SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
THU NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS THROUGH THE DAY, THEN
SHOWERS LIKELY THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-200800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. SCATTERED SHOWERS AND TSTMS.
TONIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING SW
5 KT LATE. WAVES 1 TO 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
WED NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
THU NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
E WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-200800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
REST OF THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED
SHOWERS AND TSTMS.
WED
W WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
THU NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
E WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-200800-
CHESTER RIVER TO QUEENSTOWN MD-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
REST OF THIS AFTERNOON
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. SCATTERED SHOWERS AND TSTMS.
TONIGHT
S WINDS 10 KT. WAVES 1 FT.
WED
SW WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
THU NIGHT
E WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
E WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-200800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 2 FT. SCATTERED
SHOWERS WITH ISOLATED TSTMS.
TONIGHT
S WINDS 10 KT. WAVES 1 TO 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
THU NIGHT
NE WINDS 10 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
FRI
E WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-200800-
EASTERN BAY-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT. ISOLATED SHOWERS AND TSTMS.
TONIGHT
S WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED
SW WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
THU NIGHT
NE WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI
E WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-200800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TONIGHT...S WINDS 10 TO 15 KT
BECOMING SW LATE. GUSTS UP TO
20 KT. WAVES 1 TO 2 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
THU NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS LIKELY.
FRI
E WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS LIKELY.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-200800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
REST OF THIS AFTERNOON
S WINDS 15 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.
WED
SW WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
THU NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS LIKELY.
FRI
E WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-200800-
PATUXENT RIVER TO BROOMES ISLAND MD-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
THU
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE OF
SHOWERS.
THU NIGHT
NE WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY.
FRI...E WINDS 10 TO 15 KT
BECOMING NE 5 KT AFTER MIDNIGHT. WAVES
1 FT. SHOWERS LIKELY.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-200800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
WED...SW WINDS 10 TO 15 KT
BECOMING S LATE. GUSTS UP TO 20 KT.
WAVES 2 FT.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
THU NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS LIKELY.
FRI
E WINDS 10 TO 15 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY. A CHANCE OF
TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-200800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
456 PM EDT TUE MAY 19 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY
...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...
REST OF THIS AFTERNOON
S WINDS 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.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT...SW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
THU NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS LIKELY.
FRI
E WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
SAT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY. A CHANCE OF
TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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