020
FZUS51 KLWX 040628
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 AM EDT SAT JUL 4 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.
ANZ500-042000-
228 AM EDT SAT JUL 4 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A BROAD AREA OF HOT HIGH PRESSURE WILL REMAIN NEAR THE MID-ATLANTIC
THROUGH THE HOLIDAY WEEKEND. THE CHANCE FOR STRONG THUNDERSTORMS
INCREASES THIS WEEKEND INTO EARLY NEXT WEEK, WITH SPECIAL MARINE
WARNINGS POSSIBLE. A FRONTAL ZONE WILL MEANDER NEARBY ON SUNDAY INTO
MONDAY, BEFORE DRIFTING SOUTH OF THE WATERS THEREAFTER.
ANZ535-042000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
W WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SCATTERED
SHOWERS AND TSTMS.
SUN
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
NE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
E WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WED
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-042000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
W WINDS AROUND 5 KT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
SAT NIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SUN
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
NE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
NE WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF TSTMS THROUGH
THE NIGHT. A CHANCE OF SHOWERS.
WED
E WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-042000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...W WINDS AROUND 5 KT
BECOMING SE LATE. WAVES 1 FT.
SAT NIGHT...N WINDS 5 TO 10 KT
BECOMING SW IN THE LATE EVENING
AND OVERNIGHT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN NIGHT
E WINDS 10 TO 15 KT. WAVES 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
MON NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WED
E WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-042000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
NW WINDS 5 KT. WAVES FLAT.
SAT...NW WINDS AROUND 5 KT
BECOMING SW IN THE AFTERNOON. WAVES
1 FT OR LESS. SCATTERED SHOWERS AND TSTMS.
SAT NIGHT...W WINDS 5 TO 10 KT
BECOMING SE LATE. WAVES 1 FT OR
LESS. SCATTERED SHOWERS AND TSTMS.
SUN
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY IN
THE MORNING, THEN A CHANCE OF TSTMS THROUGH THE NIGHT. A CHANCE OF
SHOWERS.
WED
E WINDS AROUND 5 KT. WAVES FLAT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-042000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...W WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT
OR LESS. SCATTERED SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SUN
S WINDS 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND TSTMS.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
MON NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
NE 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.
WED
E WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-042000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
W WINDS 5 KT. WAVES FLAT.
SAT...W WINDS AROUND 5 KT
BECOMING S IN THE AFTERNOON. WAVES 1 FT
OR LESS. SCATTERED SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SCATTERED
SHOWERS AND TSTMS.
SUN
SE WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY IN
THE MORNING, THEN A CHANCE OF TSTMS THROUGH THE NIGHT. A CHANCE OF
SHOWERS.
WED
E WINDS AROUND 5 KT. WAVES FLAT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-042000-
CHESTER RIVER TO QUEENSTOWN MD-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...W WINDS AROUND 5 KT
BECOMING SW LATE. WAVES 1 FT OR LESS.
SCATTERED SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
SUN
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
MON
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY IN
THE MORNING, THEN A CHANCE OF TSTMS THROUGH THE NIGHT. A CHANCE OF
SHOWERS.
WED
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-042000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...W WINDS AROUND 5 KT
BECOMING S LATE. WAVES 1 FT. SCATTERED
SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SUN
SE WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WED
E WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-042000-
EASTERN BAY-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...W WINDS AROUND 5 KT
BECOMING SW LATE. WAVES 1 FT OR LESS.
SCATTERED SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
SUN
S WINDS AROUND 5 KT. WAVES FLAT. A CHANCE OF SHOWERS AND
TSTMS.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
NE 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.
WED
E WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-042000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...N WINDS AROUND 5 KT
BECOMING S LATE. WAVES 1 FT.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WED
E WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-042000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...W WINDS AROUND 5 KT
BECOMING S LATE. WAVES 1 FT OR LESS.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SUN
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
E WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WED
E WINDS 5 KT. WAVES LESS THAN 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-042000-
PATUXENT RIVER TO BROOMES ISLAND MD-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
W WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...N WINDS AROUND 5 KT
BECOMING S LATE. WAVES 1 FT.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
MON NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS THROUGH THE NIGHT.
WED
E WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-042000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT...W WINDS AROUND 5 KT
BECOMING S LATE. WAVES 1 FT.
SAT NIGHT...NW WINDS 10 KT
BECOMING SW IN THE LATE EVENING AND
OVERNIGHT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
MON
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A CHANCE
OF TSTMS.
MON NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS.
WED...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-042000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
228 AM EDT SAT JUL 4 2026
OVERNIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
SAT
SW WINDS 5 TO 10 KT. WAVES 1 FT.
SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN NIGHT
SE WINDS 10 TO 15 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
TUE
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS AND TSTMS.
WED...N WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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