643
FZUS51 KLWX 280257
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1057 PM EDT MON JUL 27 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.
ANZ500-280800-
1057 PM EDT MON JUL 27 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A STRONG FRONTAL SYSTEM APPROACHES FROM THE NORTHWEST TODAY BEFORE
MOVING THROUGH ON TUESDAY. THE ASSOCIATED COLD FRONT SHOULD CROSS
THE WATERS BY LATE TUESDAY BEFORE WEAK HIGH PRESSURE SLOWLY BUILDS
IN BY MID-WEEK. SMALL CRAFT ADVISORIES MAY NEED TO BE EXTENDED
THROUGH FRIDAY.
ANZ535-280800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. ISOLATED
SHOWERS AND TSTMS LATE THIS EVENING.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS.
TUE NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED NIGHT
NW WINDS 10 KT. GUSTS UP TO 20 KT IN THE EVENING. WAVES
1 FT.
THU
NW WINDS 10 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-280800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
WAVES 1 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT.
SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED NIGHT
NW WINDS 10 KT. WAVES 1 FT.
THU
NW WINDS 10 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT...S WINDS AROUND 5 KT
BECOMING SE. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-280800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 10 KT. WAVES 1 FT.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
NUMEROUS SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-280800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS
AND TSTMS LATE THIS EVENING.
TUE...S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT
INCREASING TO 25 KT
IN THE AFTERNOON. WAVES 1 TO 2 FT. WIDESPREAD SHOWERS AND SCATTERED
TSTMS.
TUE NIGHT...SW WINDS 5 TO 10 KT
BECOMING NW LATE. WAVES 1 FT.
SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT
SE WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-280800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 10 KT. WAVES 1 TO 2 FT. ISOLATED SHOWERS
AND TSTMS LATE THIS EVENING.
TUE...S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT
INCREASING TO 25 KT
IN THE AFTERNOON. WAVES 2 TO 3 FT. WIDESPREAD SHOWERS AND SCATTERED
TSTMS.
TUE NIGHT...SW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
SAT...SE WINDS 5 KT
BECOMING S. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-280800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED TSTMS
WITH ISOLATED SHOWERS LATE THIS EVENING.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES 1 FT.
WIDESPREAD SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...SW WINDS 10 KT
BECOMING NW LATE. WAVES 1 FT.
SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A
CHANCE OF SHOWERS AND TSTMS.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
NW WINDS 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
SAT
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-280800-
CHESTER RIVER TO QUEENSTOWN MD-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS AND
TSTMS LATE THIS EVENING.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 2 FT. WIDESPREAD SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...SW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
SAT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-280800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 10 KT. WAVES 2 FT. SCATTERED TSTMS WITH
ISOLATED SHOWERS LATE THIS EVENING.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING W
AFTER MIDNIGHT. WAVES 3 FT...SUBSIDING TO 1 FT AFTER MIDNIGHT.
SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
SAT...N WINDS 5 KT...BECOMING S. WAVES 1 FT OR LESS
BUILDING TO
1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-280800-
EASTERN BAY-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS AND
TSTMS LATE THIS EVENING.
TUE
S WINDS 15 TO 20 KT. GUSTS UP TO 25 KT. WAVES 2 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...SW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 1 TO 2 FT. SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
THU NIGHT
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
SAT...E WINDS 5 KT
BECOMING S. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-280800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 10 KT. WAVES 1 TO 2 FT.
TUE...S WINDS 15 TO 20 KT. GUSTS UP TO 25 KT
INCREASING TO 30 KT
IN THE AFTERNOON. WAVES 3 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...SW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 TO 3 FT. SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 KT. WAVES 1 TO 2 FT.
FRI...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
SAT...W WINDS 5 KT...BECOMING S 10 TO 15 KT. WAVES 1 FT OR LESS
BUILDING TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-280800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS AND
TSTMS LATE THIS EVENING.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...SW WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 FT. SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
SAT...SE WINDS 5 KT
BECOMING S. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-280800-
PATUXENT RIVER TO BROOMES ISLAND MD-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH
TUESDAY EVENING...
REST OF TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT
INCREASING TO 25 KT
IN THE AFTERNOON. WAVES 1 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...SW WINDS 10 KT
BECOMING NW LATE. GUSTS UP TO 20 KT.
WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
FRI
W WINDS AROUND 5 KT. WAVES 1 FT.
SAT...SW WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-280800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH LATE
TUESDAY NIGHT...
REST OF TONIGHT
S WINDS 10 KT. WAVES 2 FT.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 3 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 25 KT. WAVES 2 TO 3 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING SW. WAVES 1 FT.
SAT...S WINDS 10 TO 15 KT
BECOMING 10 KT AFTER MIDNIGHT. WAVES
1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-280800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1057 PM EDT MON JUL 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH LATE
TUESDAY NIGHT...
REST OF TONIGHT
S WINDS 10 KT. WAVES 1 TO 2 FT.
TUE
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 2 TO 3 FT.
NUMEROUS SHOWERS AND SCATTERED TSTMS.
TUE NIGHT...S WINDS 10 TO 15 KT
BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 25 KT. WAVES 2 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
FRI...NW WINDS 5 TO 10 KT
BECOMING SW. WAVES 1 FT.
SAT...SW WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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