553
FZUS51 KLWX 210523
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
123 AM EDT SAT MAR 21 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.
ANZ500-212000-
123 AM EDT SAT MAR 21 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
HIGH PRESSURE WILL BUILD IN TODAY. ANOTHER COLD FRONT WILL PUSH
THROUGH SUNDAY NIGHT BEFORE HIGH PRESSURE APPROACHES FROM THE WEST
EARLY NEXT WEEK. SMALL CRAFT ADVISORIES MAY BE NEEDED SATURDAY
MORNING, AND AGAIN SUNDAY AFTERNOON THROUGH MONDAY NIGHT. DEPENDING
ON HOW THE THUNDERSTORMS EVOLVE SUNDAY EVENING INTO SUNDAY NIGHT,
SPECIAL MARINE WARNINGS ARE ALSO POSSIBLE.
ANZ535-212000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
123 AM EDT SAT MAR 21 2026
OVERNIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS AND TSTMS
LIKELY.
SAT
N 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. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT.
SUN NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
RAIN LIKELY.
MON
NW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. A
CHANCE OF RAIN.
MON NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT.
TUE
SE WINDS AROUND 5 KT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-212000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
AND TSTMS LIKELY.
SAT...N WINDS 5 TO 10 KT
BECOMING NE LATE. WAVES 1 FT.
SAT NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT...SW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF RAIN.
MON
N WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF RAIN.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING SE IN THE AFTERNOON AND
EVENING, THEN BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
WED
SW WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-212000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SCATTERED SHOWERS WITH ISOLATED TSTMS.
SAT...NW WINDS 5 TO 10 KT
BECOMING NE LATE. WAVES 1 TO 2 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 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES
2 FT. A CHANCE OF RAIN.
MON
N WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF RAIN.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING E 5 TO 10 KT IN THE AFTERNOON
AND EVENING, THEN BECOMING S AFTER MIDNIGHT. WAVES 1 TO 2 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-212000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT...SW WINDS 5 TO 10 KT
BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. WAVES 1 FT. A CHANCE OF RAIN.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE
OF RAIN.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING SW. WAVES 1 FT OR LESS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-212000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
SAT
N WINDS 5 TO 10 KT. WAVES 2 FT.
SAT NIGHT...E WINDS AROUND 5 KT
BECOMING S AFTER MIDNIGHT. WAVES
1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN NIGHT...S WINDS 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 2 FT.
RAIN LIKELY.
MON
N WINDS 15 TO 20 KT. WAVES 3 FT. A CHANCE OF RAIN.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 TO 2 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-212000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
123 AM EDT SAT MAR 21 2026
OVERNIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES
1 FT. RAIN LIKELY.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A CHANCE
OF RAIN.
MON NIGHT
N WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
TUE
S WINDS 5 KT. WAVES LESS THAN 1 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-212000-
CHESTER RIVER TO QUEENSTOWN MD-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT...E WINDS 5 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT...S WINDS 10 KT
BECOMING NW AFTER MIDNIGHT. WAVES 1 FT.
RAIN LIKELY.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT. A CHANCE
OF RAIN.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT.
TUE...N WINDS 5 TO 10 KT
BECOMING SW. WAVES 1 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-212000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
AND TSTMS LIKELY.
SAT...N WINDS 5 TO 10 KT
BECOMING NE LATE. WAVES 2 FT.
SAT NIGHT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES
1 TO 2 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 2 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. WAVES
2 FT. RAIN LIKELY.
MON
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A CHANCE
OF RAIN.
MON NIGHT
N WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING E 5 KT IN THE AFTERNOON, THEN
BECOMING S. WAVES 1 TO 2 FT.
WED
S WINDS 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-212000-
EASTERN BAY-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS.
SAT
N WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT...E WINDS 5 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. RAIN LIKELY.
MON
N WINDS 15 TO 20 KT. WAVES 2 FT. A CHANCE OF RAIN.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
TUE...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 TO 2 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-212000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS AND TSTMS LIKELY.
SAT...NW WINDS 5 TO 10 KT
BECOMING N LATE. WAVES 2 FT.
SAT NIGHT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES
1 TO 2 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 2 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. A CHANCE OF RAIN.
MON
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A CHANCE
OF RAIN.
MON NIGHT
N WINDS 15 TO 20 KT. WAVES 3 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING NE 5 KT IN THE AFTERNOON, THEN
BECOMING S. WAVES 1 TO 2 FT.
WED
S WINDS 10 KT. WAVES 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-212000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS AND TSTMS LIKELY.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT...NE WINDS AROUND 5 KT
BECOMING SE IN THE LATE EVENING
AND OVERNIGHT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. A CHANCE OF RAIN.
MON
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. A CHANCE
OF RAIN.
MON NIGHT
N WINDS 15 TO 20 KT. WAVES 2 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING NW 5 KT IN THE AFTERNOON, THEN
BECOMING S. WAVES 1 TO 2 FT.
WED
S WINDS 5 TO 10 KT. WAVES 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-212000-
PATUXENT RIVER TO BROOMES ISLAND MD-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 10 KT. WAVES 1 FT. SHOWERS AND TSTMS LIKELY.
SAT...NW WINDS 5 TO 10 KT
BECOMING NE LATE. WAVES 1 FT.
SAT NIGHT
SE WINDS 5 KT. WAVES LESS THAN 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 RAIN.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF RAIN.
MON NIGHT
N WINDS 10 TO 15 KT. WAVES 1 FT.
TUE...NE WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-212000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT.
SCATTERED SHOWERS WITH ISOLATED TSTMS.
SAT
NW WINDS 5 TO 10 KT. WAVES 2 FT.
SAT NIGHT...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES
1 TO 2 FT.
SUN
S WINDS 10 KT. WAVES 2 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. WAVES
2 TO 3 FT. A CHANCE OF RAIN.
MON
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 4 FT. A CHANCE
OF RAIN.
MON NIGHT
N WINDS 15 TO 20 KT. WAVES 3 FT.
TUE...N WINDS 10 TO 15 KT...BECOMING S 5 TO 10 KT. WAVES 3 FT
SUBSIDING TO 1 TO 2 FT.
WED
S WINDS 10 KT. WAVES 2 TO 3 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-212000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
123 AM EDT SAT MAR 21 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
OVERNIGHT
SW WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SCATTERED SHOWERS WITH ISOLATED TSTMS.
SAT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SUN NIGHT
SW WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF RAIN.
MON
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A
CHANCE OF RAIN.
MON NIGHT
N WINDS 15 TO 20 KT. WAVES 2 FT.
TUE...N WINDS 10 TO 15 KT
BECOMING NW 5 TO 10 KT IN THE
AFTERNOON, THEN BECOMING S. WAVES 1 TO 2 FT.
WED
S WINDS 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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