440
FZUS51 KLWX 160403
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1203 AM EDT SUN AUG 16 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.
ANZ500-162000-
1203 AM EDT SUN AUG 16 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A WARM FRONT OVERHEAD WILL LIFT SLOWLY NORTHEASTWARD ACROSS THE
REGION THROUGH TONIGHT. A COLD FRONT APPROACHING FROM THE UPPER OHIO
VALLEY WILL FOLLOW FOR MONDAY. HIGH PRESSURE WILL BUILD IN FROM THE
MIDWEST TUESDAY, THEN ANOTHER COLD FRONT WILL APPROACH FROM THE
WEST WEDNESDAY INTO THURSDAY.
ANZ535-162000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH THIS
EVENING...
OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. ISOLATED SHOWERS.
SUN
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE LATE MORNING AND
AFTERNOON. WAVES 1 FT. SHOWERS AND SCATTERED TSTMS.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS AND SCATTERED
TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-162000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH THIS
EVENING...
OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE LATE MORNING AND
AFTERNOON. WAVES 1 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. NUMEROUS SHOWERS AND
SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
SW WINDS AROUND 5 KT. WAVES 1 FT.
THU
NW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-162000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SCATTERED SHOWERS AND TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW AFTER MIDNIGHT. GUSTS
UP TO 25 KT. WAVES 2 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...SW WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS.
THU...NW WINDS 5 TO 10 KT
BECOMING N. WAVES 1 FT. A CHANCE OF
SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-162000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 FT. SHOWERS AND SCATTERED TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW LATE. GUSTS UP TO
20 KT. WAVES 1 TO 2 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES FLAT.
WED...W WINDS AROUND 5 KT
BECOMING SW. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-162000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
SUN...S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT
INCREASING TO 25 KT
IN THE AFTERNOON. WAVES 2 TO 3 FT. SHOWERS AND SCATTERED TSTMS.
SUN NIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING SW
10 TO 15 KT LATE. WAVES 3 FT. SHOWERS AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...SW WINDS AROUND 5 KT
INCREASING TO 5 TO 10 KT. WAVES 1 FT
OR LESS.
THU
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-162000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. ISOLATED SHOWERS.
SUN
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE LATE MORNING
AND AFTERNOON. WAVES 1 FT. SHOWERS AND SCATTERED TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW 5 TO 10 KT LATE.
GUSTS UP TO 20 KT. WAVES 1 FT. SHOWERS AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
NW WINDS 5 KT. WAVES FLAT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES FLAT.
WED...W WINDS AROUND 5 KT
BECOMING SW. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-162000-
CHESTER RIVER TO QUEENSTOWN MD-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT. WAVES 1 TO 2 FT.
SHOWERS AND SCATTERED TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING SW LATE. GUSTS UP TO
20 KT. WAVES 2 FT. SHOWERS AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...W WINDS 5 KT
BECOMING S. WAVES 1 FT OR LESS.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-162000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
S WINDS 10 KT. WAVES 1 FT.
SUN...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT
BUILDING TO 4 FT IN THE AFTERNOON. SHOWERS AND SCATTERED TSTMS.
SUN NIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING SW
AFTER MIDNIGHT. WAVES 3 FT. SHOWERS AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...SW WINDS 5 TO 10 KT
BECOMING S 10 TO 15 KT IN THE EVENING,
THEN BECOMING SW AFTER MIDNIGHT. WAVES 1 FT OR LESS...BUILDING TO
2 FT.
THU
N WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-162000-
EASTERN BAY-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT. WAVES 1 TO 2 FT.
SHOWERS AND SCATTERED TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING SW
LATE. WAVES 2 FT. SHOWERS AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES FLAT.
WED...W WINDS 5 KT
BECOMING S. WAVES 1 FT OR LESS.
THU
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-162000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
S WINDS 10 KT. WAVES 1 FT.
SUN
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 TO 3 FT.
NUMEROUS SHOWERS AND SCATTERED TSTMS.
SUN NIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING SW
AFTER MIDNIGHT. WAVES 3 FT. SHOWERS AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...W WINDS 5 KT...BECOMING S 10 TO 15 KT. WAVES 1 FT OR LESS
BUILDING TO 2 FT.
THU
N WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-162000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
SUN
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
NUMEROUS SHOWERS AND SCATTERED TSTMS.
SUN NIGHT...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT
BECOMING SW
10 TO 15 KT WITH GUSTS TO 20 KT AFTER MIDNIGHT. WAVES 2 FT. SHOWERS
AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...W WINDS 5 KT
BECOMING S 10 TO 15 KT. WAVES 1 FT OR LESS.
THU
NW WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-162000-
PATUXENT RIVER TO BROOMES ISLAND MD-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
SUN NIGHT...S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT
BECOMING SW
5 TO 10 KT AFTER MIDNIGHT. WAVES 1 FT. SHOWERS AND SCATTERED TSTMS.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
WED
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
THU...NW WINDS 5 TO 10 KT
BECOMING N. WAVES 1 FT. A CHANCE OF
SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-162000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
SUN...S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 2 FT
BUILDING TO 4 FT IN THE AFTERNOON. SCATTERED SHOWERS AND TSTMS.
SUN NIGHT...S WINDS 15 TO 20 KT
BECOMING SW LATE. GUSTS UP TO
25 KT. WAVES 4 FT. SHOWERS AND SCATTERED TSTMS.
MON...W WINDS 10 TO 15 KT. WAVES 3 FT
SUBSIDING TO 1 FT IN THE
AFTERNOON.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
WED...NW WINDS 5 KT...BECOMING S 10 TO 15 KT. WAVES 1 FT OR LESS
BUILDING TO 2 FT.
THU...NW WINDS 10 KT
BECOMING N. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-162000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1203 AM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE
TONIGHT...
OVERNIGHT
SE WINDS 10 KT. WAVES 1 FT.
SUN
S WINDS 10 TO 15 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SCATTERED SHOWERS.
SUN NIGHT...S WINDS 15 TO 20 KT
BECOMING SW LATE. GUSTS UP TO
25 KT. WAVES 2 TO 3 FT. SHOWERS AND SCATTERED TSTMS.
MON
W WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED...W WINDS 5 KT...BECOMING S 10 TO 15 KT. WAVES 1 FT OR LESS
BUILDING TO 2 FT.
THU...W WINDS 10 KT
BECOMING N. WAVES 1 FT. A CHANCE OF SHOWERS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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