318
FZUS51 KLWX 180955
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
554 AM EDT FRI SEP 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.
ANZ500-182100-
554 AM EDT FRI SEP 18 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A COLD FRONT WILL SINK THIS MORNING. HIGH PRESSURE BRIEFLY BUILDS
OVER THE NORTHEASTERN U.S. ON SATURDAY BEFORE ANOTHER FRONTAL SYSTEM
LOOMS NEARBY ON SUNDAY AND INTO EARLY NEXT WEEK. SMALL CRAFT
ADVISORIES MAY BE NEEDED LATER THIS EVENING BEHIND THE COLD FRONT.
WIND GUSTS REMAIN ELEVATED AT TIMES SATURDAY THROUGH TUESDAY, WHICH
MAY PROMPT ADDITIONAL ADVISORIES.
ANZ535-182100-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
W WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS LIKELY THROUGH THE NIGHT.
TUE
NE WINDS 10 TO 15 KT. WAVES 1 FT. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-182100-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
NE WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-182100-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
554 AM EDT FRI SEP 18 2026
TODAY...NW WINDS 5 TO 10 KT
BECOMING N LATE. WAVES 1 FT.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. WAVES 2 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON...N WINDS 5 TO 10 KT
BECOMING NE 10 TO 15 KT. WAVES 1 TO
2 FT...BUILDING TO 3 FT. A CHANCE OF SHOWERS THROUGH THE DAY, THEN
SHOWERS LIKELY WITH A CHANCE OF TSTMS THROUGH THE NIGHT.
TUE...NE WINDS 15 KT...INCREASING TO 20 TO 25 KT. WAVES 3 FT
BUILDING TO 4 FT. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-182100-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 10 KT. WAVES 1 FT.
TONIGHT
N WINDS 10 TO 15 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SUN NIGHT...S WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT. SHOWERS WITH A CHANCE OF TSTMS.
MON
NE WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SHOWERS LIKELY AFTER MIDNIGHT.
TUE
NE WINDS 20 TO 25 KT. WAVES 2 FT. SHOWERS LIKELY, MAINLY IN
THE MORNING.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-182100-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 10 KT. WAVES 1 FT.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SAT
NE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SAT NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
SUN
S WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS.
SUN NIGHT...S WINDS 10 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 TO
2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
NE WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
SHOWERS LIKELY AFTER MIDNIGHT.
TUE
NE WINDS 20 TO 25 KT. WAVES 3 FT. SHOWERS LIKELY THROUGH THE
DAY, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-182100-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
SUN NIGHT...S WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
NE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SHOWERS LIKELY AFTER MIDNIGHT.
TUE
NE WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS LIKELY .
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-182100-
CHESTER RIVER TO QUEENSTOWN MD-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
NE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
SHOWERS LIKELY AFTER MIDNIGHT.
TUE
NE WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS LIKELY. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-182100-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 10 KT. WAVES 1 FT.
TONIGHT
NE WINDS 10 TO 15 KT. WAVES 2 FT.
SAT
NE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SAT NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE
OF SHOWERS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON...NE WINDS 10 TO 15 KT
INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. WAVES 2 FT. A CHANCE OF SHOWERS THROUGH THE DAY. SHOWERS
LIKELY THROUGH THE NIGHT.
TUE
NE WINDS 25 TO 30 KT. WAVES 3 FT. SHOWERS LIKELY. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-182100-
EASTERN BAY-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
NE WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SHOWERS LIKELY AFTER MIDNIGHT.
TUE
NE WINDS 20 TO 25 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-182100-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 10 KT. WAVES 1 TO 2 FT.
TONIGHT
NE WINDS 10 TO 15 KT. WAVES 2 FT.
SAT
NE WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON...N WINDS 10 TO 15 KT
BECOMING NE 15 TO 20 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS. SHOWERS LIKELY AFTER MIDNIGHT.
TUE...NE WINDS 15 TO 20 KT
INCREASING TO 25 TO 30 KT. WAVES
3 FT...BUILDING TO 4 FT. SHOWERS LIKELY. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-182100-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 10 KT. WAVES 1 FT.
TONIGHT
NE WINDS 10 TO 15 KT. WAVES 1 FT.
SAT
NE WINDS 10 TO 15 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON...N WINDS 10 TO 15 KT
BECOMING NE 15 TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS. SHOWERS LIKELY AFTER MIDNIGHT.
TUE
NE WINDS 20 TO 25 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-182100-
PATUXENT RIVER TO BROOMES ISLAND MD-
554 AM EDT FRI SEP 18 2026
TODAY
N WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE DAY, THEN SHOWERS LIKELY THROUGH THE NIGHT.
TUE
NE WINDS 15 TO 20 KT. WAVES 1 FT. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-182100-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
554 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 10 KT. WAVES 1 TO 2 FT.
TONIGHT
NE WINDS 10 TO 15 KT. WAVES 2 FT.
SAT
NE WINDS 10 TO 15 KT. WAVES 2 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. WAVES 2 FT.
SUN
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
MON...N WINDS 10 TO 15 KT
BECOMING E 15 TO 20 KT. WAVES 1 TO
2 FT...BUILDING TO 3 FT. A CHANCE OF SHOWERS. A CHANCE OF TSTMS
THROUGH THE NIGHT. SHOWERS LIKELY AFTER MIDNIGHT.
TUE...NE WINDS 25 TO 30 KT. WAVES 3 FT
BUILDING TO 5 FT. SHOWERS
LIKELY. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-182100-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
554 AM EDT FRI SEP 18 2026
TODAY
NW WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS AND TSTMS THIS
AFTERNOON.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
NE WINDS 10 KT. WAVES 1 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. WAVES 1 FT.
SUN
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
MON...N WINDS 10 TO 15 KT
BECOMING NE. WAVES 1 TO 2 FT. A CHANCE
OF SHOWERS, THEN SHOWERS LIKELY AFTER MIDNIGHT.
TUE
NE WINDS 20 TO 25 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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