465
FZUS51 KLWX 310257
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1057 PM EDT THU JUL 30 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.
ANZ500-310800-
1057 PM EDT THU JUL 30 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
WEAK HIGH PRESSURE WILL SLOWLY BUILD IN FROM THE WEST THROUGH
SATURDAY AS LOW PRESSURE GRADUALLY MOVES AWAY FROM NEW ENGLAND. THE
NEXT LOW PRESSURE SYSTEM WILL APPROACH FROM THE OHIO VALLEY SUNDAY
BEFORE CROSSING WITH A SERIES OF FRONTS EARLY NEXT WEEK. SMALL CRAFT
ADVISORIES MAY BE NEEDED FOR PORTIONS OF THE WATERS LATE SATURDAY
THROUGH MONDAY.
ANZ535-310800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT.
FRI NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
SAT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT.
SAT NIGHT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. A CHANCE
OF SHOWERS.
SUN NIGHT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON...S WINDS 5 TO 10 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS LIKELY. A CHANCE OF TSTMS THROUGH THE NIGHT, THEN A CHANCE
OF SHOWERS AFTER MIDNIGHT.
TUE
E WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-310800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT.
FRI NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
S WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY. A CHANCE OF
TSTMS THROUGH THE NIGHT, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-310800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
N WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...S WINDS AROUND 5 KT
BECOMING SE 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY. A CHANCE OF
TSTMS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-310800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
N WINDS 5 KT. WAVES FLAT.
FRI
NW WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON...S WINDS 5 TO 10 KT
BECOMING E AFTER MIDNIGHT. WAVES 1 FT OR
LESS. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
TUE
E WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-310800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
FRI NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...S WINDS AROUND 5 KT
INCREASING TO 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. WAVES 1 TO 2 FT.
SAT NIGHT
S WINDS 15 TO 20 KT. WAVES 2 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY THROUGH THE
DAY. A CHANCE OF TSTMS. A CHANCE OF SHOWERS IN THE EVENING.
TUE
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-310800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES FLAT.
FRI
NE WINDS 5 KT. WAVES FLAT.
FRI NIGHT
S WINDS AROUND 5 KT. WAVES FLAT.
SAT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT OR LESS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY
THROUGH THE DAY. A CHANCE OF TSTMS. A CHANCE OF SHOWERS IN THE
EVENING.
TUE
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-310800-
CHESTER RIVER TO QUEENSTOWN MD-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NW WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT.
SUN
S WINDS 10 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF TSTMS.
SHOWERS LIKELY THROUGH THE DAY, THEN A CHANCE OF SHOWERS THROUGH THE
NIGHT.
TUE
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-310800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NE WINDS 5 KT. WAVES FLAT.
FRI NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...S WINDS 5 KT
INCREASING TO 10 TO 15 KT WITH GUSTS TO 25 KT
IN THE AFTERNOON. WAVES 1 FT...BUILDING TO 3 FT IN THE AFTERNOON.
SAT NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SUN
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
WAVES 2 TO 3 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO
3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS. SHOWERS
LIKELY THROUGH THE DAY, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.
TUE...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT. A
CHANCE OF SHOWERS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-310800-
EASTERN BAY-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
N WINDS 5 KT. WAVES FLAT.
FRI
NW WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SAT...S WINDS 5 KT
INCREASING TO 10 TO 15 KT WITH GUSTS TO 20 KT
IN THE AFTERNOON. WAVES 1 FT OR LESS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS. SHOWERS
LIKELY THROUGH THE DAY, THEN A CHANCE OF SHOWERS THROUGH THE NIGHT.
TUE
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-310800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...S WINDS 5 KT
BECOMING SE 15 TO 20 KT WITH GUSTS TO 25 KT IN
THE AFTERNOON. WAVES 1 FT...BUILDING TO 3 FT IN THE AFTERNOON.
SAT NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SUN...S WINDS 10 KT
INCREASING TO 15 TO 20 KT WITH GUSTS TO 25 KT
IN THE AFTERNOON. WAVES 2 TO 3 FT.
SUN NIGHT
S WINDS 15 TO 20 KT. GUSTS UP TO 25 KT IN THE EVENING.
WAVES 2 TO 3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS. SHOWERS
LIKELY .
TUE...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT. A
CHANCE OF SHOWERS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-310800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
N WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NW WINDS AROUND 5 KT. WAVES 1 FT.
FRI NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...S WINDS 5 KT
INCREASING TO 10 TO 15 KT WITH GUSTS TO 20 KT
IN THE AFTERNOON. WAVES 1 TO 2 FT.
SAT NIGHT
S WINDS 15 TO 20 KT. WAVES 2 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF TSTMS. SHOWERS
LIKELY .
TUE...E WINDS 5 TO 10 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 FT. A
CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-310800-
PATUXENT RIVER TO BROOMES ISLAND MD-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
N WINDS AROUND 5 KT. WAVES 1 FT.
FRI NIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...S WINDS AROUND 5 KT
BECOMING SE 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON. WAVES 1 FT.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY. A CHANCE OF
TSTMS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-310800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
N WINDS AROUND 5 KT. WAVES FLAT.
FRI NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...S WINDS 5 KT
BECOMING SE 10 TO 15 KT WITH GUSTS TO 25 KT IN
THE AFTERNOON. WAVES 1 FT...BUILDING TO 3 FT IN THE AFTERNOON.
SAT NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 3 FT.
SUN
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
WAVES 2 TO 3 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF TSTMS.
SHOWERS LIKELY .
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-310800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1057 PM EDT THU JUL 30 2026
REST OF TONIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
FRI
NW WINDS 5 KT. WAVES FLAT.
FRI NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT.
SAT...S WINDS 5 KT
INCREASING TO 10 TO 15 KT WITH GUSTS TO 20 KT
IN THE AFTERNOON. WAVES 1 FT.
SAT NIGHT
S WINDS 15 TO 20 KT. WAVES 2 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
SW WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF TSTMS.
SHOWERS LIKELY .
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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