309
FZUS51 KLWX 182357
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
757 PM EDT THU JUN 18 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.
ANZ500-190800-
757 PM EDT THU JUN 18 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A COLD FRONT WILL SLOWLY CROSS THE WATERS THROUGH FRIDAY MORNING.
HIGH PRESSURE WILL BUILD NEAR THE AREA OVER THE WEEKEND BEFORE
ANOTHER FRONTAL SYSTEM APPROACHES THE AREA EARLY NEXT WEEK. SMALL
CRAFT ADVISORIES WILL LIKELY BE NEEDED FOR PORTIONS OF THE WATERS
FRIDAY AND SATURDAY.
ANZ535-190800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 25 KT. WAVES 1 FT.
SCATTERED SHOWERS AFTER MIDNIGHT.
FRI
N WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT. SCATTERED SHOWERS.
FRI NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT.
SAT
NW WINDS 5 TO 10 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON...S WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE OF TSTMS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-190800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 FT. ISOLATED SHOWERS AND TSTMS THIS EVENING, THEN
SCATTERED SHOWERS WITH ISOLATED TSTMS AFTER MIDNIGHT.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT. SCATTERED SHOWERS.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT.
SUN NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
MON...S WINDS 10 TO 15 KT
BECOMING W 5 TO 10 KT AFTER MIDNIGHT.
WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-190800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND TSTMS THIS
EVENING, THEN NUMEROUS SHOWERS AND SCATTERED TSTMS AFTER MIDNIGHT.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. NUMEROUS SHOWERS AND
SCATTERED TSTMS.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
MON...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 2 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-190800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 25 KT UNTIL EARLY
MORNING. WAVES 1 TO 2 FT. ISOLATED SHOWERS AFTER MIDNIGHT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
W WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN A CHANCE OF TSTMS
THROUGH THE NIGHT. SHOWERS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-190800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT...W WINDS 10 TO 15 KT. GUSTS UP TO 30 KT
DIMINISHING TO
20 KT LATE THIS EVENING AND OVERNIGHT. WAVES 2 TO 3 FT...SUBSIDING
TO 1 FT LATE. ISOLATED SHOWERS AFTER MIDNIGHT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
W WINDS 10 KT. WAVES 1 FT.
SAT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SAT NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING
TO 5 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON...SE WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 2 FT.
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS WITH A CHANCE OF
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-190800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING NW
5 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT. ISOLATED SHOWERS AFTER
MIDNIGHT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT OR LESS.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
MON...SE WINDS 10 TO 15 KT
BECOMING S IN THE AFTERNOON AND
EVENING, THEN BECOMING W AFTER MIDNIGHT. WAVES 1 FT. A CHANCE OF
SHOWERS IN THE MORNING, THEN SHOWERS WITH A CHANCE OF TSTMS THROUGH
THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-190800-
CHESTER RIVER TO QUEENSTOWN MD-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 TO 2 FT. ISOLATED SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
W WINDS 10 KT. WAVES 1 TO 2 FT.
SAT NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-190800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 TO 2 FT. ISOLATED SHOWERS AFTER MIDNIGHT.
FRI...NW WINDS 5 KT
BECOMING SW LATE. WAVES 1 FT. SCATTERED
SHOWERS.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
W WINDS 10 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT. SHOWERS WITH A CHANCE OF TSTMS.
TUE...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-190800-
EASTERN BAY-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW
5 KT LATE. WAVES 1 TO 2 FT. ISOLATED SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
W WINDS 10 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
MON...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 2 FT.
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS WITH A CHANCE OF
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-190800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING W
5 KT LATE. WAVES 1 TO 2 FT. A SLIGHT CHANCE OF SHOWERS AND TSTMS
THIS EVENING, THEN SCATTERED SHOWERS WITH ISOLATED TSTMS AFTER
MIDNIGHT.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. NUMEROUS SHOWERS.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
W WINDS 10 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT. SHOWERS WITH A CHANCE OF TSTMS.
TUE...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-190800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW
LATE. WAVES 1 TO 2 FT. A SLIGHT CHANCE OF SHOWERS AND TSTMS THIS
EVENING, THEN SCATTERED SHOWERS WITH ISOLATED TSTMS AFTER MIDNIGHT.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. NUMEROUS SHOWERS.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
W WINDS 10 KT. WAVES 1 FT.
SAT NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT AFTER MIDNIGHT.
WAVES 2 FT. A CHANCE OF TSTMS.
TUE...NW WINDS 10 TO 15 KT
DIMINISHING TO 5 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-190800-
PATUXENT RIVER TO BROOMES ISLAND MD-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS THIS EVENING,
THEN SCATTERED SHOWERS WITH ISOLATED TSTMS AFTER MIDNIGHT.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT. NUMEROUS SHOWERS.
FRI NIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
W WINDS AROUND 5 KT. WAVES 1 FT.
SUN NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
MON...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-190800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS AND TSTMS THIS EVENING, THEN NUMEROUS
SHOWERS WITH ISOLATED TSTMS AFTER MIDNIGHT.
FRI...NW WINDS 5 TO 10 KT
BECOMING N IN THE AFTERNOON. WAVES
1 FT. SHOWERS AND SCATTERED TSTMS.
FRI NIGHT
W WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SAT
W WINDS 10 TO 15 KT. WAVES 2 FT.
SAT NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...NW WINDS 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT.
SUN NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT.
MON...S WINDS 15 TO 20 KT
BECOMING W AFTER MIDNIGHT. WAVES 3 FT.
SHOWERS LIKELY THROUGH THE NIGHT. A CHANCE OF TSTMS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-190800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
757 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AND TSTMS THIS EVENING, THEN NUMEROUS
SHOWERS WITH ISOLATED TSTMS AFTER MIDNIGHT.
FRI...NW WINDS 5 TO 10 KT
BECOMING N IN THE AFTERNOON. WAVES
1 FT. SHOWERS AND SCATTERED TSTMS.
FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SAT
W WINDS 10 TO 15 KT. WAVES 1 FT.
SAT NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN NIGHT
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
MON...S WINDS 15 TO 20 KT
BECOMING W AFTER MIDNIGHT. WAVES 2 TO
3 FT. SHOWERS LIKELY THROUGH THE NIGHT. A CHANCE OF TSTMS. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
TUE
NW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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