834
FZUS51 KLWX 301457
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1057 AM EDT WED SEP 30 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.
ANZ500-302000-
1057 AM EDT WED SEP 30 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL BUILD ACROSS THE MID-ATLANTIC TODAY, THEN MOVE
OFFSHORE THROUGH THE END OF THE WEEK AS A COLD FRONT APPROACHES FROM
THE WEST. THIS FRONT WILL STALL NEAR THE AREA THIS WEEKEND WHEN A
WAVE OF LOW PRESSURE MAY PASS NEARBY OR TO THE SOUTH. HIGH PRESSURE
WILL LIKELY RETURN EARLY NEXT WEEK. SMALL CRAFT ADVISORIES MAY BE
NEEDED AT TIMES IN SOUTH TO SOUTHWEST FLOW THURSDAY EVENING THROUGH
FRIDAY AFTERNOON, THEN IN NORTHERLY FLOW FRIDAY NIGHT INTO SATURDAY.
ANZ535-302000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING. A CHANCE OF SHOWERS THROUGH THE NIGHT.
SUN
N WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY THROUGH THE
DAY, THEN A CHANCE OF SHOWERS IN THE EVENING.
ANZ536-302000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN
N WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY THROUGH THE
DAY, THEN A CHANCE OF SHOWERS IN THE EVENING.
ANZ537-302000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 KT. WAVES 1 FT.
FRI
SW WINDS 10 KT. WAVES 1 FT.
FRI NIGHT...SW WINDS 5 TO 10 KT
BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT.
SAT...N WINDS 10 TO 15 KT
BECOMING NE 5 TO 10 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS, THEN SHOWERS LIKELY AFTER MIDNIGHT.
SUN...NE WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS LIKELY. A CHANCE OF SHOWERS AFTER MIDNIGHT.
ANZ530-302000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
SW WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT...N WINDS 10 TO 15 KT
BECOMING NE AROUND 5 KT. WAVES 1 FT OR
LESS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN...E WINDS 5 TO 10 KT
BECOMING S IN THE EVENING, THEN BECOMING
NW AFTER MIDNIGHT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
ANZ531-302000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
SAT...N WINDS 10 TO 15 KT
BECOMING E 5 TO 10 KT. WAVES 1 TO 2 FT.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN...E WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS.
ANZ538-302000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
FRI NIGHT
NW WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT...N WINDS 10 TO 15 KT
BECOMING NE 5 KT. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
E WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
ANZ539-302000-
CHESTER RIVER TO QUEENSTOWN MD-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 KT. WAVES 1 FT.
FRI
SW WINDS 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
SAT...N WINDS 15 KT...BECOMING NE 5 TO 10 KT. WAVES 1 TO 2 FT
SUBSIDING TO FLAT AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
SUN
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
ANZ532-302000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 2 FT.
THU
S WINDS 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 KT. WAVES 1 FT.
FRI
SW WINDS 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
SAT...N WINDS 10 TO 15 KT
BECOMING E 5 TO 10 KT. WAVES 1 TO 2 FT.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN...NE WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS.
ANZ540-302000-
EASTERN BAY-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 KT. WAVES 1 FT.
FRI
SW WINDS 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
SAT...N WINDS 10 TO 15 KT
BECOMING E 5 TO 10 KT. WAVES 1 TO
2 FT...SUBSIDING TO FLAT AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
SUN...NE WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT
OR LESS. SHOWERS LIKELY THROUGH THE DAY, THEN A CHANCE OF SHOWERS IN
THE EVENING.
ANZ533-302000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 2 FT.
THU
S WINDS 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 KT. WAVES 1 FT.
FRI
SW WINDS 10 KT. WAVES 1 FT.
FRI NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT
BUILDING TO 3 FT AFTER MIDNIGHT. A CHANCE OF SHOWERS.
SAT...N WINDS 10 TO 15 KT
BECOMING E 5 TO 10 KT. WAVES 2 TO
3 FT...SUBSIDING TO 1 FT. A CHANCE OF SHOWERS IN THE MORNING. A
CHANCE OF SHOWERS THROUGH THE NIGHT.
SUN...NE WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS LIKELY THROUGH THE DAY, THEN A CHANCE OF SHOWERS IN THE
EVENING.
ANZ541-302000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 KT. WAVES 1 FT.
FRI
SW WINDS 10 KT. WAVES 1 FT.
FRI NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
SAT...N WINDS 10 TO 15 KT
BECOMING E 5 TO 10 KT. WAVES 1 TO 2 FT.
A CHANCE OF SHOWERS IN THE MORNING. A CHANCE OF SHOWERS THROUGH THE
NIGHT.
SUN...NE WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS LIKELY THROUGH THE DAY, THEN A CHANCE OF SHOWERS THROUGH THE
NIGHT.
ANZ542-302000-
PATUXENT RIVER TO BROOMES ISLAND MD-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 KT. WAVES 1 FT.
FRI
SW WINDS 10 KT. WAVES 1 FT.
FRI NIGHT...SW WINDS 10 KT
BECOMING N WITH GUSTS TO 20 KT AFTER
MIDNIGHT. WAVES 1 FT. A CHANCE OF SHOWERS.
SAT...N WINDS 10 TO 15 KT
BECOMING NE 5 TO 10 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
SUN
N WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY .
ANZ534-302000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 10 KT. WAVES 2 FT.
THU
S WINDS 10 KT. WAVES 2 FT.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES 2 FT.
FRI
SW WINDS 10 KT. WAVES 2 FT.
FRI NIGHT...SW WINDS 10 KT
BECOMING N AFTER MIDNIGHT. GUSTS UP TO
20 KT. WAVES 2 FT.
SAT...N WINDS 15 TO 20 KT
BECOMING NE 5 TO 10 KT. WAVES 2 TO
3 FT...SUBSIDING TO 1 FT. A CHANCE OF SHOWERS.
SUN...NE WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS LIKELY. A CHANCE OF SHOWERS AFTER MIDNIGHT.
ANZ543-302000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1057 AM EDT WED SEP 30 2026
REST OF TODAY
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
THU
S WINDS 10 KT. WAVES 1 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI
SW WINDS 10 TO 15 KT. WAVES 1 FT.
FRI NIGHT...SW WINDS 10 KT
BECOMING N AFTER MIDNIGHT. GUSTS UP TO
20 KT. WAVES 1 TO 2 FT.
SAT...N WINDS 10 TO 15 KT
BECOMING NE 5 TO 10 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS.
SUN...NE WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS LIKELY. A CHANCE OF SHOWERS AFTER MIDNIGHT.
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