499
FZUS51 KLWX 222057
CWFLWX
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
457 PM 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.
ANZ500-230800-
457 PM 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
CONDITIONS RETURNING. WEAK HIGH PRESSURE BUILDS OVER THE WATERS FOR
EARLY NEXT WEEK BRINGING FAIR WEATHER.
ANZ535-230800-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 5 KT. WAVES LESS THAN 1 FT.
ISOLATED SHOWERS AND TSTMS.
TONIGHT
SE WINDS AROUND 5 KT. WAVES 1 FT. NUMEROUS SHOWERS AND
SCATTERED TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
W 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
SE WINDS AROUND 5 KT. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ536-230800-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED 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 AROUND 5 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...E WINDS AROUND 5 KT
BECOMING SE. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ537-230800-
TIDAL POTOMAC FROM COBB ISLAND TO SMITH POINT-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS AND TSTMS.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
SCATTERED 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
W WINDS 5 KT. WAVES LESS THAN 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT OR LESS.
WED...E WINDS 5 TO 10 KT
BECOMING SE. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ530-230800-
CHESAPEAKE BAY NORTH OF POOLES ISLAND-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS.
TONIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FT. NUMEROUS SHOWERS AND
SCATTERED TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED 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
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ531-230800-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS AND TSTMS.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING S LATE. WAVES 1 FT.
NUMEROUS SHOWERS AND SCATTERED TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED 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 5 TO 10 KT. WAVES 1 FT OR LESS.
WED...E WINDS AROUND 5 KT
BECOMING SE. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ538-230800-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS AND TSTMS.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
NUMEROUS SHOWERS AND SCATTERED TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
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 FLAT.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ539-230800-
CHESTER RIVER TO QUEENSTOWN MD-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 5 KT. WAVES LESS THAN 1 FT.
NUMEROUS SHOWERS AND SCATTERED TSTMS.
TONIGHT
SE WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED SHOWERS
AND TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT. SCATTERED 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 KT. WAVES LESS THAN 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WED
SE WINDS AROUND 5 KT. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ532-230800-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS AND TSTMS.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
SCATTERED 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...NE WINDS 5 KT
BECOMING SE. WAVES 1 FT OR LESS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ540-230800-
EASTERN BAY-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 10 KT. WAVES 1 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
SCATTERED 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 5 KT
BECOMING SE. WAVES 1 FT OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ533-230800-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 10 KT. WAVES 1 FT. SCATTERED
SHOWERS AND TSTMS.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
SCATTERED 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
W WINDS 5 KT. WAVES LESS THAN 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...W WINDS 5 TO 10 KT
BECOMING SW. WAVES 1 FT.
WED...NE WINDS 5 KT...BECOMING SE. WAVES 1 FT OR LESS
BUILDING TO
2 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ541-230800-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 5 KT. WAVES LESS THAN 1 FT.
NUMEROUS SHOWERS AND SCATTERED TSTMS.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
SCATTERED 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
W WINDS 5 KT. WAVES LESS THAN 1 FT.
MON NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FT.
TUE...W WINDS 5 TO 10 KT
BECOMING SW. WAVES 1 FT OR LESS.
WED...SE WINDS AROUND 5 KT
INCREASING TO 5 TO 10 KT. WAVES 1 FT
OR LESS.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ542-230800-
PATUXENT RIVER TO BROOMES ISLAND MD-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
E WINDS 5 KT. WAVES LESS THAN 1 FT.
SCATTERED SHOWERS AND TSTMS.
TONIGHT
S WINDS 5 KT. WAVES LESS THAN 1 FT. SCATTERED 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 AROUND 5 KT. WAVES 1 FT.
MON NIGHT
NW WINDS AROUND 5 KT. WAVES 1 FT.
TUE
W WINDS AROUND 5 KT. WAVES 1 FT.
WED...NE WINDS AROUND 5 KT
BECOMING SE. WAVES 1 FT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ534-230800-
CHESAPEAKE BAY FROM DRUM POINT TO SMITH POINT-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
SE WINDS 10 KT. WAVES 1 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
NUMEROUS SHOWERS AND SCATTERED TSTMS.
SUN
W WINDS 5 TO 10 KT. WAVES 1 FT.
SUN NIGHT
NW 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...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
WED...SE WINDS 10 TO 15 KT
BECOMING S AFTER MIDNIGHT. WAVES 1 TO
2 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WINDS AND WAVES HIGHER AND VISIBILITIES LOWER IN AND NEAR TSTMS.
ANZ543-230800-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-
457 PM EDT SAT AUG 22 2026
REST OF THIS AFTERNOON
SE WINDS 10 KT. WAVES 1 FT. NUMEROUS
SHOWERS AND SCATTERED TSTMS.
TONIGHT...SE WINDS 5 TO 10 KT
BECOMING SW LATE. WAVES 1 FT.
SCATTERED 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...NW WINDS 5 TO 10 KT
BECOMING S. WAVES 1 FT.
WED
SE 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page