652
FZUS51 KLWX 211458
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1058 AM EDT THU MAY 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-
1058 AM EDT THU MAY 21 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A COLD FRONT WILL SLOWLY SAG SOUTH OF THE WATERS THURSDAY. THE FRONT
WILL REMAIN SOUTH OF THE WATERS FRIDAY AND SATURDAY BEFORE LIFTING
BACK TO THE NORTH SUNDAY INTO EARLY NEXT WEEK. INCREASED ONSHORE
FLOW WILL KEEP SMALL CRAFT ADVISORY CONDITIONS GOING ACROSS THE
WATERS AT TIMES FRIDAY AFTERNOON INTO THE UPCOMING HOLIDAY WEEKEND.
ANZ535-212000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF TODAY
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SCATTERED SHOWERS.
TONIGHT
NE WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
FRI
NE WINDS 10 KT. WAVES 1 FT. SHOWERS.
FRI NIGHT
NE WINDS 10 KT. WAVES 1 FT. SHOWERS.
SAT
E WINDS 10 KT. WAVES 1 FT. SHOWERS.
SAT NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS.
SUN
E WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING, THEN SHOWERS LIKELY THROUGH THE NIGHT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
ANZ536-212000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
REST OF TODAY
NE WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SCATTERED SHOWERS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS LIKELY.
FRI
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
FRI NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SAT
E WINDS 10 KT. WAVES 1 FT. SHOWERS.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
SUN
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
MON
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING, THEN A CHANCE OF TSTMS THROUGH THE NIGHT. SHOWERS
LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-212000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
REST OF TODAY
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES
1 TO 2 FT. SCATTERED SHOWERS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS LIKELY.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
FRI NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT...E WINDS 10 TO 15 KT
BECOMING S 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE
OF TSTMS.
SUN
NE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS, MAINLY IN
THE MORNING.
MON
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING, THEN A CHANCE OF TSTMS THROUGH THE NIGHT. SHOWERS
LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-212000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH LATE
FRIDAY NIGHT...
REST OF TODAY
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT. WIDESPREAD SHOWERS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
LIKELY.
FRI NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY IN
THE MORNING, THEN A CHANCE OF SHOWERS IN THE AFTERNOON. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
MON
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS LIKELY THROUGH THE NIGHT. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
ANZ531-212000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
REST OF TODAY
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
NUMEROUS SHOWERS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
FRI
E WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
FRI NIGHT
E WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
SAT
E WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY IN
THE MORNING, THEN A CHANCE OF SHOWERS IN THE AFTERNOON. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
MON
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS.
ANZ538-212000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH LATE
FRIDAY NIGHT...
REST OF TODAY
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
NUMEROUS SHOWERS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
FRI
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT. SHOWERS.
FRI NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS.
SAT
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SUN
E WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS LIKELY IN THE
MORNING. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
E WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
ANZ539-212000-
CHESTER RIVER TO QUEENSTOWN MD-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
REST OF TODAY
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
NUMEROUS SHOWERS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS.
FRI
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
FRI NIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SHOWERS.
SAT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SHOWERS.
SAT NIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SHOWERS WITH A CHANCE OF TSTMS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY IN
THE MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON, THEN A CHANCE OF
SHOWERS AFTER MIDNIGHT.
MON
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-212000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
REST OF TODAY
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SCATTERED SHOWERS.
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. A CHANCE
OF SHOWERS.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
FRI NIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SAT
E WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS WITH A CHANCE OF TSTMS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING, THEN SHOWERS LIKELY THROUGH THE NIGHT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-212000-
EASTERN BAY-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
REST OF TODAY
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SCATTERED SHOWERS.
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. A CHANCE
OF SHOWERS.
FRI
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
FRI NIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SAT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT.
SHOWERS WITH A CHANCE OF TSTMS.
SUN
NE WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS THROUGH
THE DAY. SHOWERS LIKELY THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-212000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
REST OF TODAY
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT. SCATTERED SHOWERS.
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
SHOWERS LIKELY.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
FRI NIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT. SHOWERS.
SAT
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 3 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS WITH A CHANCE OF TSTMS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS, MAINLY IN THE
MORNING.
MON
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
IN THE MORNING. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-212000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
REST OF TODAY
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT. SCATTERED SHOWERS.
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS
LIKELY.
FRI
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. SHOWERS.
FRI NIGHT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SAT
E WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS WITH A CHANCE OF TSTMS.
SUN
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS, MAINLY IN
THE MORNING.
MON
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
THROUGH THE DAY. SHOWERS LIKELY THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-212000-
PATUXENT RIVER TO BROOMES ISLAND MD-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
REST OF TODAY
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES
1 FT. SCATTERED SHOWERS.
TONIGHT
NE WINDS 15 KT WITH GUSTS TO 25 KT. WAVES 1 FT. SHOWERS
LIKELY.
FRI
NE WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
FRI NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS.
SAT NIGHT...E WINDS 10 TO 15 KT
BECOMING SE 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
SUN
NE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS, MAINLY IN THE
MORNING.
MON
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS IN THE
MORNING. SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-212000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
REST OF TODAY
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES
1 TO 2 FT. ISOLATED SHOWERS.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS LIKELY.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
FRI NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SHOWERS.
SAT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. SHOWERS.
SAT NIGHT...E WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. SHOWERS WITH A CHANCE OF TSTMS.
SUN...NW WINDS 5 TO 10 KT
BECOMING E. WAVES 1 FT. SHOWERS, MAINLY
IN THE MORNING.
MON...SE WINDS 5 TO 10 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 FT.
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-212000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1058 AM EDT THU MAY 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT
REST OF TODAY
NE WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES
1 TO 2 FT. ISOLATED SHOWERS.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS LIKELY.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
FRI NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS.
SAT
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SHOWERS LIKELY.
SAT NIGHT...E WINDS 10 TO 15 KT
BECOMING SE AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
SUN...W WINDS 5 TO 10 KT
BECOMING E. WAVES 1 FT OR LESS. SHOWERS,
MAINLY IN THE MORNING.
MON...S WINDS 5 TO 10 KT
BECOMING W AFTER MIDNIGHT. WAVES 1 FT. A
CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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