439
FZUS51 KLWX 042058
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 PM 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.
ANZ500-050800-
457 PM 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
REMAINS THROUGH EARLY NEXT WEEK, WITH SPECIAL MARINE WARNINGS LIKELY
AT TIMES. A FRONTAL ZONE WILL MEANDER NEARBY ON SUNDAY INTO MONDAY,
BEFORE DRIFTING SOUTH OF THE WATERS THEREAFTER.
ANZ535-050800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
S WINDS 5 KT. WAVES LESS THAN 1 FT.
NUMEROUS SHOWERS AND TSTMS.
TONIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. SHOWERS AND
TSTMS.
SUN
S WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AND TSTMS.
SUN NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
MON
NE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
N WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS LIKELY WITH 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.
ANZ536-050800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
NUMEROUS SHOWERS AND TSTMS.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. 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
NE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
NE WINDS AROUND 5 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
N WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS THROUGH THE NIGHT.
WED
E WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-050800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
SE WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS AND TSTMS.
TONIGHT...N WINDS 5 TO 10 KT
BECOMING SW IN THE LATE EVENING AND
OVERNIGHT. WAVES 1 FT. NUMEROUS TSTMS AND SCATTERED SHOWERS.
SUN...SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES FLAT
BUILDING TO 2 FT IN THE AFTERNOON.
SUN NIGHT...SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT
BECOMING E
5 TO 10 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT...SE WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES
1 FT. SHOWERS WITH A CHANCE OF TSTMS.
TUE
N 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.
ANZ530-050800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS.
TONIGHT...W WINDS 5 TO 10 KT
BECOMING SE LATE. WAVES 1 FT OR
LESS. SHOWERS AND TSTMS.
SUN
S 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
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WED
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-050800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS AND TSTMS.
SUN
S WINDS 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
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WED...NE WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-050800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT. NUMEROUS
SHOWERS AND TSTMS.
TONIGHT
SW WINDS AROUND 5 KT. WAVES 1 FT OR LESS. 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 WITH A CHANCE
OF TSTMS.
MON
NE WINDS 5 KT. WAVES LESS THAN 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
N WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS AND TSTMS THROUGH THE NIGHT.
WED
E WINDS AROUND 5 KT. WAVES FLAT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-050800-
CHESTER RIVER TO QUEENSTOWN MD-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
SE WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS AND
TSTMS.
SUN
SW 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 KT. WAVES LESS THAN 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS WITH A
CHANCE OF TSTMS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS AND 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.
ANZ532-050800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT. NUMEROUS
SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS AND TSTMS.
SUN
S 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
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
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A CHANCE
OF TSTMS THROUGH THE NIGHT.
WED...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-050800-
EASTERN BAY-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
S WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. SHOWERS AND
TSTMS.
SUN
SW WINDS AROUND 5 KT. WAVES FLAT.
SUN NIGHT
NE 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
NE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A CHANCE
OF TSTMS THROUGH THE NIGHT.
WED...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-050800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
SE WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS AND TSTMS.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN NIGHT...SE WINDS 10 TO 15 KT
BECOMING E 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
E 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
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A CHANCE
OF TSTMS THROUGH THE NIGHT.
WED...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-050800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
SW WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS AND TSTMS.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SUN NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
MON
E WINDS 5 KT. WAVES LESS THAN 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
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A CHANCE
OF TSTMS THROUGH THE NIGHT.
WED...N WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-050800-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
S WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS AND TSTMS.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON
E WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
NE WINDS 5 KT. WAVES LESS THAN 1 FT. SHOWERS WITH A
CHANCE OF TSTMS.
TUE
N WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS. A CHANCE
OF TSTMS.
WED
E WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-050800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
S WINDS 10 KT. WAVES 1 FT. ISOLATED
SHOWERS AND TSTMS.
TONIGHT...NW WINDS 10 KT
BECOMING SW IN THE LATE EVENING AND
OVERNIGHT. WAVES 1 FT. SCATTERED SHOWERS AND TSTMS.
SUN
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO 2 FT.
SUN NIGHT...S WINDS 10 TO 15 KT
BECOMING E AFTER MIDNIGHT. GUSTS
UP TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS AND TSTMS.
MON
SE WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE OF
TSTMS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FT. SHOWERS WITH A CHANCE
OF TSTMS.
TUE
N 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 S. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-050800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 PM EDT SAT JUL 4 2026
...SEVERE THUNDERSTORM WATCH 457 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...
REST OF THIS AFTERNOON
SW WINDS 10 KT. WAVES 1 FT. ISOLATED
SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS AND
TSTMS.
SUN
S WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AND TSTMS.
MON
S 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 WITH A CHANCE
OF TSTMS.
TUE
N 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 S. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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