390
FZUS51 KLWX 190627
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EDT SUN JUL 19 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.
ANZ500-192000-
227 AM EDT SUN JUL 19 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A COLD FRONT WILL DROP THROUGH THE REGION TODAY, THEN STALL TO THE
SOUTH AS HIGH PRESSURE PASSES TO THE NORTH TONIGHT INTO MONDAY. THE
FRONT WILL RETURN BACK NORTHWARD MONDAY NIGHT INTO TUESDAY,
FOLLOWED BY ANOTHER COLD FRONT TUESDAY NIGHT INTO WEDNESDAY. SMALL
CRAFT ADVISORIES MAY BE NEEDED FOR PORTIONS OF THE WATERS MONDAY
NIGHT, AND WILL BE LIKELY TUESDAY THROUGH WEDNESDAY.
ANZ535-192000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
227 AM EDT SUN JUL 19 2026
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT. ISOLATED SHOWERS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT.
MON
E WINDS AROUND 5 KT. WAVES 1 FT.
MON NIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF
SHOWERS.
TUE
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT. SHOWERS WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS WITH A CHANCE OF TSTMS.
WED...W WINDS 5 TO 10 KT
BECOMING N AFTER MIDNIGHT. WAVES 1 FT.
SHOWERS LIKELY. A CHANCE OF TSTMS THROUGH THE NIGHT, THEN A CHANCE
OF SHOWERS AFTER MIDNIGHT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-192000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
227 AM EDT SUN JUL 19 2026
OVERNIGHT
W WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES
1 FT. SHOWERS WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS WITH A CHANCE OF TSTMS.
WED...W WINDS 10 TO 15 KT
BECOMING NW 5 TO 10 KT. WAVES 1 FT. A
CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY WITH A CHANCE
OF TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-192000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
227 AM EDT SUN JUL 19 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
OVERNIGHT
W WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. ISOLATED
SHOWERS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS WITH A CHANCE
OF TSTMS.
WED...SW WINDS 10 TO 15 KT
BECOMING NW 5 TO 10 KT. WAVES 1 TO
2 FT. SHOWERS THROUGH THE DAY. A CHANCE OF TSTMS THROUGH THE NIGHT.
A CHANCE OF SHOWERS THROUGH THE NIGHT.
THU
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-192000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
227 AM EDT SUN JUL 19 2026
OVERNIGHT
W WINDS 10 TO 15 KT. WAVES 1 FT. ISOLATED SHOWERS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MON NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
WED...W WINDS 10 TO 15 KT
BECOMING NW 5 TO 10 KT. WAVES 1 FT.
SHOWERS LIKELY IN THE MORNING, THEN A CHANCE OF TSTMS THROUGH THE
NIGHT. A CHANCE OF SHOWERS.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-192000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
227 AM EDT SUN JUL 19 2026
OVERNIGHT
W WINDS 15 KT. WAVES 1 FT. ISOLATED SHOWERS.
SUN
N WINDS 10 TO 15 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
SE WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 15 TO 20 KT. WAVES 2 FT. SHOWERS WITH A CHANCE
OF TSTMS.
WED...W WINDS 10 TO 15 KT
BECOMING NW. WAVES 1 TO 2 FT. SHOWERS
LIKELY IN THE MORNING, THEN A CHANCE OF TSTMS THROUGH THE NIGHT. A
CHANCE OF SHOWERS.
THU
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-192000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
227 AM EDT SUN JUL 19 2026
OVERNIGHT
W WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MON
E WINDS 5 KT. WAVES LESS THAN 1 FT.
MON NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
TUE NIGHT
SW WINDS 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
WITH A CHANCE OF TSTMS.
WED
NW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF TSTMS THROUGH THE NIGHT. A CHANCE OF
SHOWERS.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-192000-
CHESTER RIVER TO QUEENSTOWN MD-
227 AM EDT SUN JUL 19 2026
OVERNIGHT
W WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS.
SUN
N WINDS 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
MON NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
TUE
S WINDS 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
WED...W WINDS 10 TO 15 KT
BECOMING NW 5 TO 10 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY. A CHANCE OF TSTMS THROUGH THE NIGHT, THEN A
CHANCE OF SHOWERS AFTER MIDNIGHT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-192000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
227 AM EDT SUN JUL 19 2026
OVERNIGHT
W WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS.
SUN
N WINDS 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
SE WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS LIKELY.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. SHOWERS
WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT. SHOWERS WITH A CHANCE OF TSTMS.
WED...W WINDS 10 TO 15 KT
BECOMING NW. WAVES 1 TO 2 FT. A CHANCE
OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU...N WINDS 10 TO 15 KT
BECOMING NE 5 KT AFTER MIDNIGHT. WAVES
1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-192000-
EASTERN BAY-
227 AM EDT SUN JUL 19 2026
OVERNIGHT
W WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS.
SUN
N WINDS 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MON NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
WED...W WINDS 10 TO 15 KT
BECOMING NW 5 TO 10 KT. WAVES 1 TO
2 FT. SHOWERS LIKELY. A CHANCE OF TSTMS THROUGH THE NIGHT, THEN A
CHANCE OF SHOWERS AFTER MIDNIGHT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-192000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
227 AM EDT SUN JUL 19 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
OVERNIGHT
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
ISOLATED SHOWERS.
SUN
N WINDS 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
SE WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS LIKELY.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO
3 FT. SHOWERS WITH A CHANCE OF TSTMS.
WED...W WINDS 10 TO 15 KT
BECOMING NW. WAVES 1 TO 2 FT. SHOWERS
LIKELY. A CHANCE OF TSTMS THROUGH THE NIGHT, THEN A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU...N WINDS 10 TO 15 KT
BECOMING NE 5 KT AFTER MIDNIGHT. WAVES
1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-192000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
227 AM EDT SUN JUL 19 2026
OVERNIGHT
W WINDS 15 KT. WAVES 1 FT. ISOLATED SHOWERS.
SUN
N WINDS 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MON NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
WED...W WINDS 10 TO 15 KT
BECOMING NW. WAVES 1 TO 2 FT. A CHANCE
OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF
TSTMS THROUGH THE NIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU...N WINDS 10 TO 15 KT
BECOMING NE 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-192000-
PATUXENT RIVER TO BROOMES ISLAND MD-
227 AM EDT SUN JUL 19 2026
OVERNIGHT
W WINDS 10 KT. WAVES 1 FT. ISOLATED SHOWERS.
SUN
N WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY.
TUE
S WINDS 5 TO 10 KT WITH GUSTS TO 20 KT. WAVES 1 FT. SHOWERS
WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT.
SHOWERS WITH A CHANCE OF TSTMS.
WED...SW WINDS 10 TO 15 KT
BECOMING NW 5 TO 10 KT. WAVES 1 FT.
SHOWERS. A CHANCE OF TSTMS THROUGH THE NIGHT, THEN A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-192000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
227 AM EDT SUN JUL 19 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
OVERNIGHT
W WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. ISOLATED
SHOWERS.
SUN
NW WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
SE WINDS 10 TO 15 KT. WAVES 2 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 TO 3 FT.
SHOWERS WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS WITH A CHANCE OF TSTMS.
WED...W WINDS 15 TO 20 KT
BECOMING N 10 TO 15 KT AFTER MIDNIGHT.
WAVES 3 FT...SUBSIDING TO 2 FT. SHOWERS. A CHANCE OF TSTMS THROUGH
THE NIGHT, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU
N WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-192000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
227 AM EDT SUN JUL 19 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...
OVERNIGHT
W WINDS 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. ISOLATED
SHOWERS.
SUN...NW WINDS 10 TO 15 KT
BECOMING N 5 TO 10 KT LATE. GUSTS UP
TO 20 KT. WAVES 1 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
SE WINDS 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SHOWERS WITH A CHANCE OF TSTMS.
TUE NIGHT
SW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. WAVES 3 FT.
SHOWERS WITH A CHANCE OF TSTMS.
WED...SW WINDS 20 TO 25 KT
BECOMING W 10 TO 15 KT IN THE EVENING,
THEN BECOMING N AFTER MIDNIGHT. WAVES 2 TO 3 FT...SUBSIDING TO 1 FT
AFTER MIDNIGHT. A CHANCE OF TSTMS. SHOWERS.
THU
N WINDS 10 TO 15 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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