543
FZUS51 KLWX 221457
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1057 AM EDT SAT AUG 22 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.
ANZ500-222000-
1057 AM EDT SAT AUG 22 2026
.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...
A WEAK AREA OF LOW PRESSURE WILL TRAVERSE THE WATERS THROUGHOUT THE
DAY TODAY, BRINGING HEAVY SHOWERS AND SOME THUNDERSTORMS. A COLD
FRONT WILL MOVE ACROSS THE WATERS INTO SUNDAY, RESULTING IN DRIER
CONDITIOSN RETURNING. WEAK HIGH PRESSURE BUILDS OVER THE WATERS FOR
EARLY NEXT WEEK BRINGING FAIR WEATHER.
ANZ535-222000-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 5 KT. WAVES LESS THAN 1 FT. NUMEROUS
SHOWERS LATE THIS MORNING, THEN SCATTERED SHOWERS WITH ISOLATED
TSTMS THIS AFTERNOON.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-222000-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 5 KT. WAVES LESS THAN 1 FT. NUMEROUS
SHOWERS LATE THIS MORNING, THEN SCATTERED SHOWERS WITH ISOLATED
TSTMS THIS AFTERNOON.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
W WINDS 5 KT. WAVES LESS THAN 1 FT.
MON NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
S WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-222000-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 10 KT. WAVES 1 FT. NUMEROUS SHOWERS LATE
THIS MORNING, THEN NUMEROUS SHOWERS WITH ISOLATED TSTMS THIS
AFTERNOON.
TONIGHT
SW WINDS 5 KT. WAVES LESS THAN 1 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
S 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.
ANZ530-222000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED
SHOWERS LATE THIS MORNING, THEN SCATTERED SHOWERS WITH ISOLATED
TSTMS THIS AFTERNOON.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT OR
LESS. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...W WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-222000-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 10 KT. WAVES 1 FT. SCATTERED SHOWERS.
ISOLATED TSTMS THIS AFTERNOON.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WED...N WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-222000-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED SHOWERS
LATE THIS MORNING, THEN SCATTERED SHOWERS WITH ISOLATED TSTMS THIS
AFTERNOON.
TONIGHT...E WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES
1 FT OR LESS. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...N WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-222000-
CHESTER RIVER TO QUEENSTOWN MD-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 5 KT. WAVES LESS THAN 1 FT. NUMEROUS
SHOWERS LATE THIS MORNING, THEN SCATTERED SHOWERS WITH ISOLATED
TSTMS THIS AFTERNOON.
TONIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AND TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...W WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-222000-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 10 KT. WAVES 1 FT. NUMEROUS SHOWERS LATE
THIS MORNING, THEN SCATTERED SHOWERS WITH ISOLATED TSTMS THIS
AFTERNOON.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS AND TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED...NW WINDS AROUND 5 KT...BECOMING S. WAVES 1 FT OR LESS
BUILDING TO 2 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-222000-
EASTERN BAY-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 10 KT. WAVES 1 FT. NUMEROUS SHOWERS LATE
THIS MORNING, THEN SCATTERED SHOWERS WITH ISOLATED TSTMS THIS
AFTERNOON.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT OR
LESS. A CHANCE OF SHOWERS AND TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED...E WINDS AROUND 5 KT
BECOMING S. WAVES 1 FT OR LESS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-222000-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 10 KT. WAVES 1 FT. NUMEROUS SHOWERS LATE
THIS MORNING, THEN NUMEROUS SHOWERS WITH ISOLATED TSTMS THIS
AFTERNOON.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS AND TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED...S WINDS 5 TO 10 KT. WAVES 1 FT OR LESS
BUILDING TO 2 FT. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-222000-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 5 TO 10 KT. WAVES 1 FT. NUMEROUS SHOWERS
LATE THIS MORNING, THEN NUMEROUS SHOWERS WITH ISOLATED TSTMS THIS
AFTERNOON.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS AND TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW WINDS 5 TO 10 KT. WAVES 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FT.
WED
SE WINDS 5 TO 10 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-222000-
PATUXENT RIVER TO BROOMES ISLAND MD-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 5 TO 10 KT. WAVES 1 FT. NUMEROUS SHOWERS
LATE THIS MORNING, THEN NUMEROUS SHOWERS WITH ISOLATED TSTMS THIS
AFTERNOON.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FT. A CHANCE OF SHOWERS AND
TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON
NW WINDS 5 KT. WAVES LESS THAN 1 FT.
MON NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT.
WED
S WINDS 5 TO 10 KT. WAVES 1 FT. A CHANCE OF SHOWERS THROUGH
THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-222000-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 10 KT. WAVES 1 TO 2 FT. NUMEROUS SHOWERS
LATE THIS MORNING, THEN NUMEROUS SHOWERS WITH ISOLATED TSTMS THIS
AFTERNOON.
TONIGHT...S WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS AND TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW 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
BECOMING SW. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
THROUGH THE NIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-222000-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
1057 AM EDT SAT AUG 22 2026
REST OF TODAY
E WINDS 10 KT. WAVES 1 FT. WIDESPREAD SHOWERS LATE
THIS MORNING, THEN WIDESPREAD SHOWERS WITH ISOLATED TSTMS THIS
AFTERNOON.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW AFTER MIDNIGHT. WAVES
1 FT. A CHANCE OF SHOWERS AND TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT.
MON
NW 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
BECOMING SW. WAVES 1 FT.
WED
S WINDS 10 TO 15 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
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