547
FZUS51 KLWX 092059
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
459 PM EDT SAT MAY 9 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.
ANZ500-100800-
459 PM EDT SAT MAY 9 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A WARM FRONT WILL LIFT NORTHWARD ACROSS THE MID ATLANTIC TODAY,
FOLLOWED BY A COLD FRONT SLOWLY PUSHING SOUTHEASTWARD SUNDAY INTO
MONDAY. HIGH PRESSURE WILL BUILD IN FROM THE WEST ON TUESDAY BEFORE
ANOTHER FRONTAL SYSTEM APPROACHES WEDNESDAY. SMALL CRAFT ADVISORIES
MAY BE NEEDED AGAIN AT TIMES LATE SUNDAY NIGHT THROUGH TUESDAY
MORNING AND AGAIN WEDNESDAY.
ANZ535-100800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT. ISOLATED
SHOWERS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS.
SUN NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
MON
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS AROUND 5 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
WED...S WINDS 10 TO 15 KT
BECOMING SW AROUND 5 KT AFTER MIDNIGHT.
WAVES 1 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS.
ANZ536-100800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT. ISOLATED
SHOWERS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
MON
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS LIKELY IN THE EVENING, THEN A CHANCE OF SHOWERS
AFTER MIDNIGHT.
ANZ537-100800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 2 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...W WINDS 5 TO 10 KT
BECOMING SE LATE. WAVES 1 FT OR LESS.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
MON NIGHT...NW WINDS 5 KT
INCREASING TO 10 TO 15 KT WITH GUSTS TO
20 KT AFTER MIDNIGHT. WAVES 1 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT. WAVES 1 TO
2 FT.
WED
S WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS THROUGH THE NIGHT.
ANZ530-100800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS.
SUN NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
MON...NE WINDS 5 TO 10 KT
BECOMING W IN THE AFTERNOON. WAVES 1 FT
OR LESS. SHOWERS LIKELY.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
WED
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS.
ANZ531-100800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 2 FT. ISOLATED
SHOWERS.
TONIGHT...SE WINDS 5 TO 10 KT...BECOMING SW LATE. WAVES 2 FT
SUBSIDING TO FLAT AFTER MIDNIGHT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS.
SUN NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY.
MON...NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW 5 KT
IN THE AFTERNOON. WAVES 1 TO 2 FT. SHOWERS LIKELY.
MON NIGHT...SW WINDS 5 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING W AROUND 5 KT IN THE AFTERNOON
AND EVENING, THEN BECOMING S AFTER MIDNIGHT. WAVES 1 TO 2 FT...
SUBSIDING TO 1 FT OR LESS.
WED
S WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS.
ANZ538-100800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT. ISOLATED
SHOWERS.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT OR
LESS.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS.
SUN NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY.
MON...N WINDS 5 TO 10 KT
BECOMING W IN THE AFTERNOON. WAVES 1 FT
OR LESS. A CHANCE OF SHOWERS.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
WED...S WINDS 10 TO 15 KT
BECOMING SW 5 KT AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS.
ANZ539-100800-
CHESTER RIVER TO QUEENSTOWN MD-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 2 FT. ISOLATED
SHOWERS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS.
SUN NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS LIKELY.
MON...NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW 5 TO
10 KT IN THE AFTERNOON. WAVES 1 FT. SHOWERS LIKELY.
MON NIGHT...SW WINDS 5 TO 10 KT
BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. WAVES 1 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING W AROUND 5 KT IN THE AFTERNOON
AND EVENING, THEN BECOMING S AFTER MIDNIGHT. WAVES 1 TO 2 FT...
SUBSIDING TO 1 FT OR LESS.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
ANZ532-100800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 15 KT. WAVES 2 FT. ISOLATED
SHOWERS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SCATTERED SHOWERS.
SUN NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY.
MON...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW 5 TO
10 KT IN THE AFTERNOON. WAVES 1 TO 2 FT. SHOWERS LIKELY.
MON NIGHT...W WINDS 5 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING S. WAVES 1 TO 2 FT.
WED
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
ANZ540-100800-
EASTERN BAY-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 15 KT. WAVES 2 FT. ISOLATED
SHOWERS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN
SW WINDS 5 TO 10 KT. WAVES FLAT. SCATTERED SHOWERS.
SUN NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS LIKELY.
MON...N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING NW 5 TO
10 KT IN THE AFTERNOON. WAVES 1 FT. SHOWERS LIKELY.
MON NIGHT...W WINDS 5 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 1 FT OR LESS.
TUE...N WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT. WAVES 1 FT OR
LESS.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
ANZ533-100800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT. ISOLATED SHOWERS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN...SW WINDS 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT.
SUN NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
MON NIGHT...W WINDS 5 KT
BECOMING NW 10 TO 15 KT WITH GUSTS TO
20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING S. WAVES 1 TO 2 FT.
WED
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
ANZ541-100800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 15 KT. WAVES 2 FT. ISOLATED
SHOWERS.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS LIKELY.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
MON NIGHT...W WINDS 5 KT
BECOMING NW 10 TO 15 KT WITH GUSTS TO
20 KT AFTER MIDNIGHT. WAVES 1 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING S AROUND 5 KT IN THE EVENING,
THEN INCREASING TO 10 TO 15 KT AFTER MIDNIGHT. WAVES 1 FT OR LESS.
WED
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS IN
THE AFTERNOON. SHOWERS THROUGH THE NIGHT.
ANZ542-100800-
PATUXENT RIVER TO BROOMES ISLAND MD-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN...SW WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
MON
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS THROUGH THE NIGHT.
ANZ534-100800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
3 FT.
TONIGHT...S WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT LATE. WAVES
1 TO 2 FT.
SUN...SW WINDS 5 TO 10 KT
BECOMING SE LATE. WAVES 1 FT.
SUN NIGHT...SE WINDS 10 KT
BECOMING N AFTER MIDNIGHT. GUSTS UP TO
20 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
LIKELY.
MON NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 TO 2 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING S. WAVES 1 TO 2 FT.
WED
S WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF SHOWERS IN THE
AFTERNOON. SHOWERS THROUGH THE NIGHT.
ANZ543-100800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
459 PM EDT SAT MAY 9 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF THIS AFTERNOON
S WINDS 15 KT WITH GUSTS TO 20 KT. WAVES
2 FT.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT...SE WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES
1 FT. SHOWERS LIKELY.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
MON NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 1 FT.
TUE...N WINDS 10 TO 15 KT...BECOMING S. WAVES 1 TO 2 FT
SUBSIDING
TO 1 FT OR LESS.
WED
S WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS THROUGH THE NIGHT.
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