163
FZUS51 KLWX 170858
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
458 AM EDT FRI JUL 17 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.
ANZ500-172300-
458 AM EDT FRI JUL 17 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A WEAK FRONT WILL STALL OVER THE SOUTHERN CHESAPEAKE BAY TODAY, THEN
RETURN NORTHWARD AS A WARM FRONT FRIDAY NIGHT INTO SATURDAY
MORNING. A STRONGER COLD FRONT WILL DROP THROUGH THE REGION
SATURDAY NIGHT INTO SUNDAY. HIGH PRESSURE WILL BUILD NORTH OF THE
AREA MONDAY. SMALL CRAFT ADVISORIES MAY BE NEEDED FOR PORTIONS OF
THE WATERS FRIDAY NIGHT THROUGH SATURDAY NIGHT AND AGAIN MONDAY
NIGHT INTO TUESDAY.
ANZ535-172300-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
458 AM EDT FRI JUL 17 2026
REST OF THE OVERNIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT. SMOKE.
TODAY
N WINDS AROUND 5 KT. WAVES 1 FT. SMOKE.
TONIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT. SMOKE.
SAT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
AND TSTMS LIKELY. PATCHY SMOKE.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT.
MON
SE WINDS AROUND 5 KT. WAVES 1 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-172300-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
458 AM EDT FRI JUL 17 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT. AREAS OF SMOKE.
TODAY...NE WINDS 5 TO 10 KT
BECOMING SE LATE. WAVES 1 FT. SMOKE.
TONIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT. SMOKE.
SAT...S WINDS AROUND 5 KT
BECOMING SW 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT.
MON...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
TUE
SW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-172300-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
458 AM EDT FRI JUL 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
REST OF THE OVERNIGHT
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. AREAS OF SMOKE.
TODAY
NE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. SMOKE.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SMOKE.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
TUE
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF TSTMS. A
CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-172300-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
458 AM EDT FRI JUL 17 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT. SMOKE.
TODAY...N WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
SMOKE.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES FLAT. SMOKE.
SAT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
WITH A CHANCE OF TSTMS. AREAS OF SMOKE.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
MON...E WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
TUE
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS IN THE AFTERNOON. SHOWERS LIKELY WITH A CHANCE OF TSTMS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-172300-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
458 AM EDT FRI JUL 17 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 2 FT. SMOKE.
TODAY...NE WINDS 5 TO 10 KT
BECOMING SE LATE. WAVES 1 FT. SMOKE.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SMOKE.
SAT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS WITH A CHANCE OF TSTMS. PATCHY SMOKE.
SAT NIGHT
SW WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
NW WINDS 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON...E WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
TUE
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS IN THE AFTERNOON. SHOWERS LIKELY WITH A CHANCE OF TSTMS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-172300-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
458 AM EDT FRI JUL 17 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT. SMOKE.
TODAY
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SMOKE.
TONIGHT
S WINDS 5 KT. WAVES FLAT. SMOKE.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS. AREAS OF SMOKE.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
MON...E WINDS 5 KT
BECOMING SE. WAVES 1 FT OR LESS.
TUE
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS IN THE AFTERNOON. SHOWERS LIKELY WITH A CHANCE OF TSTMS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-172300-
CHESTER RIVER TO QUEENSTOWN MD-
458 AM EDT FRI JUL 17 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT. SMOKE.
TODAY...N WINDS 5 TO 10 KT
BECOMING W LATE. WAVES 1 FT OR LESS.
SMOKE.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SMOKE.
SAT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
WITH A CHANCE OF TSTMS. PATCHY SMOKE.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON...E WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
TUE
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS IN THE AFTERNOON. SHOWERS LIKELY WITH A CHANCE OF TSTMS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-172300-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
458 AM EDT FRI JUL 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
REST OF THE OVERNIGHT
N WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. SMOKE.
TODAY
NE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. SMOKE.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SMOKE.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS WITH A CHANCE OF TSTMS.
SUN
NW WINDS 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON...E WINDS 5 TO 10 KT
BECOMING SE 10 TO 15 KT. WAVES 1 TO
2 FT.
TUE...S WINDS 10 TO 15 KT. WAVES 1 FT
BUILDING TO 2 TO 3 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-172300-
EASTERN BAY-
458 AM EDT FRI JUL 17 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT. SMOKE.
TODAY
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SMOKE.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SMOKE.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS. PATCHY SMOKE.
SAT NIGHT
SW WINDS 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON...E WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
TUE
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-172300-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
458 AM EDT FRI JUL 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
REST OF THE OVERNIGHT
N WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. AREAS OF SMOKE.
TODAY...NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
DIMINISHING TO
5 KT IN THE AFTERNOON. WAVES 1 TO 2 FT. SMOKE.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SMOKE.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
NW WINDS 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON...E WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT.
TUE...S WINDS 5 TO 10 KT...INCREASING TO 15 TO 20 KT. WAVES 1 FT
BUILDING TO 2 TO 3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-172300-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
458 AM EDT FRI JUL 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
REST OF THE OVERNIGHT
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. AREAS OF SMOKE.
TODAY
N WINDS 5 TO 10 KT. WAVES 1 FT. SMOKE.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SMOKE.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS WITH A
CHANCE OF TSTMS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON...E WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
TUE
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-172300-
PATUXENT RIVER TO BROOMES ISLAND MD-
458 AM EDT FRI JUL 17 2026
REST OF THE OVERNIGHT
N WINDS 10 KT. WAVES 1 FT. AREAS OF SMOKE.
TODAY
NE WINDS 5 TO 10 KT. WAVES 1 FT. SMOKE.
TONIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SMOKE.
SAT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT.
MON...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
TUE
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-172300-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
458 AM EDT FRI JUL 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
REST OF THE OVERNIGHT
N WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. AREAS OF SMOKE.
TODAY
N WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE MORNING. WAVES
1 TO 2 FT. SMOKE.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SMOKE.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT. A
CHANCE OF SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
NW WINDS 5 TO 10 KT. WAVES 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON...SE WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
TUE
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-172300-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
458 AM EDT FRI JUL 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
REST OF THE OVERNIGHT
N WINDS 10 KT WITH GUSTS TO 20 KT. WAVES
1 FT. AREAS OF SMOKE.
TODAY...N WINDS 5 TO 10 KT
BECOMING W LATE. WAVES 1 FT. SMOKE.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SMOKE.
SAT
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
SUN
NW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON...SE WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
TUE
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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