490
FZUS51 KLWX 101500
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1059 AM EDT TUE MAR 10 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.
ANZ500-102000-
1059 AM EDT TUE MAR 10 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A STRONG COLD FRONT WILL LIKELY IMPACT THE REGION LATE WEDNESDAY
INTO THURSDAY. AN ADDITIONAL FRONT WILL CROSS THE WATERS THIS
WEEKEND. SMALL CRAFT ADVISORIES MAY BE NEEDED AT TIMES FOR PORTIONS
OF THE WATERS, ESPECIALLY MID TO LATE WEEK.
ANZ535-102000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS AROUND 5 KT. WAVES 1 FT.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
WED
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 35 KT. WAVES 2 FT. SHOWERS
LIKELY.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 30 KT
BECOMING W
AROUND 5 KT AFTER MIDNIGHT. WAVES 1 FT.
FRI...S WINDS 15 TO 20 KT
BECOMING W 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 2 TO 3 FT IN THE AFTERNOON AND EVENING,
THEN SUBSIDING TO 1 FT AFTER MIDNIGHT.
SAT...NW WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
ANZ536-102000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS.
WED NIGHT
SW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. WAVES 3 FT. SHOWERS
LIKELY.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
DIMINISHING
TO AROUND 5 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
FRI...S WINDS 10 TO 15 KT
INCREASING TO 20 TO 25 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING SW 15 TO 20 KT AFTER MIDNIGHT.
WAVES 2 FT.
SAT...NW WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
ANZ537-102000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 FT.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING N
AROUND 5 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
FRI...SE WINDS 10 TO 15 KT
BECOMING S 20 TO 25 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING SW 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 2 TO 3 FT.
SAT...NW WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
ANZ530-102000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
SW WINDS 5 KT. WAVES FLAT.
TONIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT.
SHOWERS LIKELY.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 FT. SHOWERS
LIKELY.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 30 KT
DIMINISHING
TO AROUND 5 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
FRI...S WINDS 10 TO 15 KT
INCREASING TO 25 TO 30 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING W 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 2 TO 3 FT.
SAT...NW WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 FT OR
LESS.
ANZ531-102000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT. PATCHY FOG LATE
THIS MORNING WITH VSBY 1 TO 3 NM.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. SHOWERS LIKELY.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. SHOWERS
LIKELY.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
DIMINISHING
TO AROUND 5 KT AFTER MIDNIGHT. WAVES 3 FT...SUBSIDING TO 1 FT AFTER
MIDNIGHT.
FRI...S WINDS 10 TO 15 KT
INCREASING TO 25 TO 30 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING W 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 3 FT.
SAT...NW WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ538-102000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS AROUND 5 KT. WAVES FLAT.
TONIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SHOWERS LIKELY.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. SHOWERS
LIKELY.
THU NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 FT.
FRI...S WINDS 10 TO 15 KT
INCREASING TO 20 TO 25 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING W 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
SAT...NW WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
ANZ539-102000-
CHESTER RIVER TO QUEENSTOWN MD-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. SHOWERS
LIKELY.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
DIMINISHING
TO AROUND 5 KT AFTER MIDNIGHT. WAVES 3 FT...SUBSIDING TO 1 FT AFTER
MIDNIGHT.
FRI...S WINDS 10 TO 15 KT
INCREASING TO 25 TO 30 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING SW 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 3 FT.
SAT...NW WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ532-102000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT. SHOWERS
LIKELY.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 5 KT AFTER MIDNIGHT. WAVES 3 FT... SUBSIDING TO 1 FT AFTER
MIDNIGHT.
FRI...S WINDS 15 TO 20 KT
INCREASING TO 25 TO 30 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING W 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 5 FT IN THE AFTERNOON AND EVENING, THEN
SUBSIDING TO 3 FT AFTER MIDNIGHT.
SAT...NW WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ540-102000-
EASTERN BAY-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
DIMINISHING
TO AROUND 5 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
FRI...S WINDS 10 TO 15 KT
INCREASING TO 20 TO 25 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING SW 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 3 FT.
SAT...NW WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
ANZ533-102000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SHOWERS.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 5 KT AFTER MIDNIGHT. WAVES 3 FT... SUBSIDING TO 1 FT AFTER
MIDNIGHT.
FRI...S WINDS 15 TO 20 KT
INCREASING TO 25 TO 30 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING SW 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 5 FT IN THE AFTERNOON AND EVENING, THEN
SUBSIDING TO 3 FT AFTER MIDNIGHT.
SAT...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT IN THE
AFTERNOON, THEN BECOMING SE 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ541-102000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS.
THU NIGHT...NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
DIMINISHING
TO 5 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
FRI...S WINDS 15 TO 20 KT
INCREASING TO 25 TO 30 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING SW 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 3 FT.
SAT...NW WINDS 10 TO 15 KT
BECOMING SE. WAVES 1 TO 2 FT.
ANZ542-102000-
PATUXENT RIVER TO BROOMES ISLAND MD-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
THU
NW WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 TO 2 FT.
SHOWERS.
THU NIGHT
NW WINDS 5 TO 10 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 FT.
FRI...S WINDS 15 TO 20 KT
BECOMING SW 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 FT.
SAT...NW WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
ANZ534-102000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT. PATCHY FOG LATE
THIS MORNING WITH VSBY 1 TO 3 NM.
TONIGHT
S WINDS 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. A
CHANCE OF SHOWERS.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 4 FT.
SHOWERS.
THU NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 2 TO 3 FT.
FRI...SE WINDS 10 TO 15 KT
BECOMING S 20 TO 25 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING SW 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 3 FT.
SAT...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT IN THE
AFTERNOON, THEN BECOMING SE 10 TO 15 KT. WAVES 1 TO 2 FT.
ANZ543-102000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1059 AM EDT TUE MAR 10 2026
REST OF TODAY
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. PATCHY FOG
LATE THIS MORNING WITH VSBY 1 TO 3 NM.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 FT.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
THU
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
SHOWERS.
THU NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 1 TO 2 FT.
FRI...SE WINDS 10 TO 15 KT
BECOMING S 20 TO 25 KT IN THE
AFTERNOON AND EVENING, THEN BECOMING SW 15 TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT...BUILDING TO 2 TO 3 FT.
SAT...NW WINDS 10 TO 15 KT
BECOMING SE. WAVES 1 FT.
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