129
FZUS51 KLWX 181827
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 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-
227 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-
227 PM EDT THU JUN 18 2026
..GALE WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING
THIS AFTERNOON
SW WINDS 15 TO 20 KT WITH GUSTS TO 35 KT. WAVES
1 TO 2 FT. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TONIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 30 KT
BECOMING NW
AROUND 5 KT AFTER MIDNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT. SHOWERS LIKELY.
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
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-190800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
227 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
THIS AFTERNOON
SW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
TONIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING TO
AROUND 5 KT AFTER MIDNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY.
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
SW WINDS AROUND 5 KT. WAVES 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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-190800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
227 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
THIS AFTERNOON
SW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
CHANCE OF SHOWERS AND TSTMS.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
5 KT LATE. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS WITH A CHANCE OF
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
BECOMING S. WAVES 1 FT OR LESS.
MON...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 2 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-190800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
227 PM EDT THU JUN 18 2026
..GALE WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING
THIS AFTERNOON
SW WINDS 15 TO 20 KT WITH GUSTS TO 35 KT. WAVES
2 TO 3 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 30 KT
BECOMING NW
5 TO 10 KT LATE. WAVES 1 TO 2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
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. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-190800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
227 PM EDT THU JUN 18 2026
..GALE WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING
THIS AFTERNOON
SW WINDS 15 TO 20 KT WITH GUSTS TO 35 KT. WAVES
3 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT...W WINDS 15 TO 20 KT WITH GUSTS TO 30 KT
DIMINISHING TO
5 TO 10 KT WITH GUSTS TO 20 KT IN THE LATE EVENING AND OVERNIGHT.
WAVES 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
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...SW WINDS 5 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT OR
LESS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-190800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
227 PM EDT THU JUN 18 2026
..GALE WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING
THIS AFTERNOON
SW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES
2 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING NW
5 KT LATE. WAVES 1 TO 2 FT.
FRI
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
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
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-190800-
CHESTER RIVER TO QUEENSTOWN MD-
227 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
THIS AFTERNOON
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TONIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING NW
5 TO 10 KT LATE. WAVES 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF 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...SW WINDS AROUND 5 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT
OR LESS. A CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
MON...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-190800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
227 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
THIS AFTERNOON
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TONIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING NW
5 TO 10 KT LATE. WAVES 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
FRI...NW WINDS 5 KT
BECOMING SW LATE. WAVES 1 FT. A CHANCE OF
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
BECOMING SE. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS AFTER MIDNIGHT.
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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-190800-
EASTERN BAY-
227 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
THIS AFTERNOON
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TONIGHT...W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW
5 TO 10 KT LATE. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.
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...SW WINDS 5 KT
BECOMING SE AFTER MIDNIGHT. WAVES 1 FT OR
LESS.
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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-190800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
227 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
THIS AFTERNOON
SW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
5 KT LATE. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.
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
BECOMING SE. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-190800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
227 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
THIS AFTERNOON
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES
3 FT. A CHANCE OF SHOWERS AND TSTMS.
TONIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW
5 TO 10 KT LATE. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY.
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
BECOMING SE. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS AFTER MIDNIGHT.
MON...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT AFTER MIDNIGHT.
WAVES 2 FT. A CHANCE OF TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-190800-
PATUXENT RIVER TO BROOMES ISLAND MD-
227 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
THIS AFTERNOON
SW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS.
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT UNTIL EARLY
MORNING. WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT. 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
S WINDS AROUND 5 KT. WAVES 1 FT.
MON...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-190800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
227 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
THIS AFTERNOON
SW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A
SLIGHT CHANCE OF SHOWERS AND TSTMS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI...NW WINDS 5 TO 10 KT
BECOMING N IN THE AFTERNOON. WAVES
1 FT. SHOWERS WITH A CHANCE OF 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 10 TO 15 KT. WAVES 1 TO 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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-190800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
227 PM EDT THU JUN 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
THIS AFTERNOON
SW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
SLIGHT CHANCE OF SHOWERS AND TSTMS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI...NW WINDS 5 TO 10 KT
BECOMING N IN THE AFTERNOON. WAVES
1 FT. SHOWERS WITH A CHANCE OF 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
BECOMING S 10 TO 15 KT. WAVES 1 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.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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