


Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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186 FZUS51 KLWX 021735 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 135 PM EDT Sat Aug 2 2025 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. ANZ500-030800- 135 PM EDT Sat Aug 2 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... High pressure will continue to build north through the weekend. The high will shift offshore heading early next week. A frontal system may approach by the middle of next week. Small Craft Advisories remain in effect for the lower waters of the bay and tidal Potomac through Sunday morning. $$ ANZ535-030800- Tidal Potomac from Key Bridge to Indian Head- 135 PM EDT Sat Aug 2 2025 .THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft. .TONIGHT...NE winds around 5 kt. Waves 1 ft. .SUN...NE winds around 5 kt. Waves 1 ft. .SUN NIGHT...NE winds around 5 kt. Waves 1 ft or less. .MON...NE winds around 5 kt. Waves 1 ft. .MON NIGHT...SW winds around 5 kt. Waves 1 ft or less. .TUE...E winds around 5 kt. Waves 1 ft. .WED...E winds around 5 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ536-030800- Tidal Potomac from Indian Head to Cobb Island- 135 PM EDT Sat Aug 2 2025 .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. .TONIGHT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...NE winds around 5 kt. Waves 1 ft. .MON...NE winds around 5 kt. Waves 1 ft. .MON NIGHT...NE winds around 5 kt. Waves 1 ft or less. .TUE...NE winds around 5 kt. Waves 1 ft. .WED...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. $$ ANZ537-030800- Tidal Potomac from Cobb Island to Smith Point- 135 PM EDT Sat Aug 2 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... .THIS AFTERNOON...NE winds 10 kt. Waves 2 ft. .TONIGHT...NE winds 5 to 10 kt with gusts to 20 kt. Waves 2 ft. .SUN...NE winds 5 to 10 kt. Waves 2 ft. .SUN NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...E winds around 5 kt. Waves 1 ft. .TUE...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers through the night. $$ ANZ530-030800- Chesapeake Bay north of Pooles Island- 135 PM EDT Sat Aug 2 2025 .THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft. .TONIGHT...E winds around 5 kt. Waves 1 ft or less. .SUN...NE winds around 5 kt. Waves flat. .SUN NIGHT...E winds around 5 kt. Waves flat. .MON...NE winds around 5 kt. Waves flat. .MON NIGHT...E winds around 5 kt. Waves flat. .TUE...E winds around 5 kt. Waves 1 ft or less. .WED...E winds 5 to 10 kt. Waves 1 ft. $$ ANZ531-030800- Chesapeake Bay from Pooles Island to Sandy Point- 135 PM EDT Sat Aug 2 2025 .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. .TONIGHT...E winds around 5 kt. Waves 1 ft or less. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...E winds around 5 kt. Waves 1 ft or less. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...SE winds around 5 kt. Waves flat. .TUE...E winds 5 to 10 kt. Waves 1 ft or less. .WED...E winds 5 to 10 kt. Waves 1 ft. $$ ANZ538-030800- Patapsco River including Baltimore Harbor- 135 PM EDT Sat Aug 2 2025 .THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft. .TONIGHT...NE winds around 5 kt. Waves 1 ft or less. .SUN...NE winds around 5 kt. Waves 1 ft or less. .SUN NIGHT...E winds around 5 kt. Waves flat. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...SW winds around 5 kt. Waves flat. .TUE...E winds around 5 kt. Waves 1 ft or less. .WED...E winds 5 to 10 kt. Waves 1 ft. $$ ANZ539-030800- Chester River to Queenstown MD- 135 PM EDT Sat Aug 2 2025 .THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft. .TONIGHT...E winds around 5 kt. Waves 1 ft or less. .SUN...NE winds 5 kt. Waves flat. .SUN NIGHT...E winds around 5 kt. Waves flat. .MON...NE winds 5 kt. Waves flat. .MON NIGHT...SE winds around 5 kt. Waves flat. .TUE...E winds 5 kt. Waves less than 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ532-030800- Chesapeake Bay from Sandy Point to North Beach- 135 PM EDT Sat Aug 2 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. .TONIGHT...E winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...E winds 5 kt. Waves less than 1 ft. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...SE winds around 5 kt. Waves 1 ft or less. .TUE...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ540-030800- Eastern Bay- 135 PM EDT Sat Aug 2 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. .TONIGHT...E winds 5 to 10 kt. Waves 1 ft or less. .SUN...NE winds 5 kt. Waves less than 1 ft. .SUN NIGHT...E winds 5 kt. Waves less than 1 ft. .MON...NE winds 5 kt. Waves less than 1 ft. .MON NIGHT...SE winds around 5 kt. Waves flat. .TUE...E winds 5 to 10 kt. Waves 1 ft or less. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ533-030800- Chesapeake Bay from North Beach to Drum Point- 135 PM EDT Sat Aug 2 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .THIS AFTERNOON...NE winds 10 kt. Waves 1 to 2 ft. .TONIGHT...E winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...E winds around 5 kt. Waves 1 ft or less. .TUE...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ541-030800- Choptank River to Cambridge MD and the Little Choptank River- 135 PM EDT Sat Aug 2 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. .TONIGHT...E winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...E winds 5 to 10 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...E winds around 5 kt. Waves 1 ft or less. .TUE...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ542-030800- Patuxent River to Broomes Island MD- 135 PM EDT Sat Aug 2 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. .TONIGHT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. .SUN NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...E winds around 5 kt. Waves 1 ft. .TUE...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 5 to 10 kt. Waves 1 ft. A chance of showers after midnight. $$ ANZ534-030800- Chesapeake Bay from Drum Point to Smith Point- 135 PM EDT Sat Aug 2 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... .THIS AFTERNOON...NE winds 10 kt with gusts to 20 kt. Waves 2 ft. .TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SUN...NE winds 10 to 15 kt. Waves 2 ft. .SUN NIGHT...NE winds 10 kt. Waves 1 to 2 ft. .MON...NE winds 5 to 10 kt. Waves 1 to 2 ft. .MON NIGHT...E winds 5 to 10 kt. Waves 1 ft. .TUE...E winds 5 to 10 kt. Waves 1 ft. .WED...E winds 10 to 15 kt. Waves 1 to 2 ft. A chance of showers after midnight. $$ ANZ543-030800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 135 PM EDT Sat Aug 2 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... .THIS AFTERNOON...NE winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .SUN...NE winds 10 to 15 kt. Waves 1 ft. .SUN NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .MON...NE winds 5 to 10 kt. Waves 1 ft. .MON NIGHT...E winds 5 to 10 kt. Waves 1 ft. .TUE...NE winds 5 to 10 kt. Waves 1 ft. .WED...E winds 10 to 15 kt. Waves 1 ft. A chance of showers after midnight. $$