Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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559 FZUS51 KLWX 020235 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 1034 PM EDT Tue Jul 1 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. ANZ500-020800- 1034 PM EDT Tue Jul 1 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... A cold front will approach the waters today, and eventually move through tonight. High pressure will build in for the middle to end of the week. Special Marine Warnings are possible with thunderstorms during the late afternoon and evening hours today. $$ ANZ535-020800- Tidal Potomac from Key Bridge to Indian Head- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...SW winds 5 kt. Waves less than 1 ft. Numerous showers with isolated tstms late this evening, then numerous showers. Patchy fog. Vsby 1 NM or less...increasing to 1 to 3 NM. .WED...NW winds around 5 kt. Waves 1 ft. Showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds around 5 kt. Waves 1 ft or less. .THU...NW winds around 5 kt. Waves 1 ft. .THU NIGHT...NW winds around 5 kt. Waves 1 ft. .FRI...N winds around 5 kt. Waves 1 ft. .FRI NIGHT...S winds around 5 kt. Waves 1 ft or less. .SAT...S winds around 5 kt. Waves 1 ft or less. .SUN...S winds around 5 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ536-020800- Tidal Potomac from Indian Head to Cobb Island- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...W winds 5 kt. Waves less than 1 ft. Numerous showers with isolated tstms late this evening, then showers. Patchy fog. Vsby 1 NM or less. .WED...NW winds around 5 kt. Waves 1 ft. Showers and scattered tstms. Vsby 1 NM or less. .WED NIGHT...SW winds around 5 kt. Waves 1 ft or less. .THU...NW winds around 5 kt. Waves 1 ft. .THU NIGHT...NW winds around 5 kt. Waves 1 ft. .FRI...N winds around 5 kt. Waves 1 ft. .FRI NIGHT...S winds around 5 kt. Waves 1 ft or less. .SAT...S winds around 5 kt. Waves 1 ft or less. .SUN...S winds 5 kt. Waves less than 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ537-020800- Tidal Potomac from Cobb Island to Smith Point- 1034 PM EDT Tue Jul 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT WEDNESDAY... .REST OF TONIGHT...W winds 10 kt with gusts to 20 kt. Waves 1 ft. Showers and scattered tstms late this evening, then showers with isolated tstms. Patchy fog. Vsby 1 NM or less. .WED...NW winds 5 to 10 kt. Waves 1 ft. Showers and scattered tstms. Vsby 1 NM or less. .WED NIGHT...SW winds around 5 kt. Waves flat. .THU...NW winds 5 kt. Waves less than 1 ft. .THU NIGHT...W winds 5 kt. Waves less than 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...SE winds around 5 kt. Waves 1 ft or less. .SAT...W winds around 5 kt...becoming SE. Waves 1 ft or less. .SUN...S winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ530-020800- Chesapeake Bay north of Pooles Island- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...W winds 5 kt. Waves less than 1 ft. Numerous showers with isolated tstms late this evening, then showers. Vsby 1 NM or less late this evening. .WED...W winds around 5 kt. Waves 1 ft or less. Numerous showers. .WED NIGHT...SW winds around 5 kt. Waves flat. .THU...NW winds around 5 kt. Waves 1 ft or less. .THU NIGHT...NW winds 5 kt. Waves less than 1 ft. .FRI...N winds 5 kt. Waves less than 1 ft. .FRI NIGHT...NW winds around 5 kt. Waves flat. .SAT...SE winds around 5 kt. Waves flat. .SUN...S winds 5 to 10 kt. Waves 1 ft or less. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ531-020800- Chesapeake Bay from Pooles Island to Sandy Point- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...W winds 5 kt. Waves less than 1 ft. Showers with isolated tstms late this evening, then numerous showers. Vsby 1 NM or less...increasing to 1 to 3 NM. .WED...W winds around 5 kt. Waves 1 ft or less. Numerous showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds around 5 kt. Waves flat. .THU...NW winds 5 kt. Waves less than 1 ft. .THU NIGHT...NW winds 5 kt. Waves less than 1 ft. .FRI...N winds 5 kt. Waves less than 1 ft. .FRI NIGHT...S winds around 5 kt. Waves 1 ft or less. .SAT...SE winds around 5 kt. Waves 1 ft or less. .SUN...S winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ538-020800- Patapsco River including Baltimore Harbor- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...W winds 5 kt. Waves less than 1 ft. Showers with isolated tstms late this evening, then numerous showers. Vsby 1 NM or less late this evening. .WED...W winds 5 kt. Waves flat. Numerous showers. .WED NIGHT...SW winds around 5 kt. Waves flat. .THU...NW winds 5 kt. Waves flat. .THU NIGHT...NW winds 5 kt. Waves flat. .FRI...N winds 5 kt. Waves flat. .FRI NIGHT...N winds around 5 kt. Waves flat. .SAT...SE winds around 5 kt. Waves flat. .SUN...S winds 5 to 10 kt. Waves 1 ft or less. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ539-020800- Chester River to Queenstown MD- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...W winds 5 kt. Waves less than 1 ft. Showers with isolated tstms late this evening, then showers. Vsby 1 NM or less... increasing to 1 to 3 NM. .WED...W winds around 5 kt. Waves 1 ft or less. Showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds around 5 kt. Waves flat. .THU...NW winds 5 kt. Waves less than 1 ft. .THU NIGHT...NW winds 5 kt. Waves less than 1 ft. .FRI...N winds 5 kt. Waves less than 1 ft. .FRI NIGHT...S winds around 5 kt. Waves flat. .SAT...SE winds around 5 kt. Waves 1 ft or less. .SUN...S winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ532-020800- Chesapeake Bay from Sandy Point to North Beach- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...W winds 5 to 10 kt. Waves 1 ft. Showers with isolated tstms late this evening, then showers. Vsby 1 NM or less... increasing to 1 to 3 NM. .WED...W winds 5 kt. Waves less than 1 ft. Showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 5 kt. Waves flat. .THU...NW winds 5 kt. Waves less than 1 ft. .THU NIGHT...NW winds 5 kt. Waves less than 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...S winds around 5 kt. Waves 1 ft or less. .SAT...E winds around 5 kt...becoming S. Waves 1 ft or less. .SUN...S winds 5 to 10 kt. Waves 1 to 2 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ540-020800- Eastern Bay- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...W winds 5 kt. Waves less than 1 ft. Showers with isolated tstms late this evening, then showers. Vsby 1 NM or less... increasing to 1 to 3 NM. .WED...NW winds around 5 kt. Waves 1 ft. Showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds around 5 kt. Waves flat. .THU...NW winds 5 kt. Waves flat. .THU NIGHT...NW winds 5 kt. Waves less than 1 ft. .FRI...N winds 5 kt. Waves less than 1 ft. .FRI NIGHT...S winds around 5 kt. Waves flat. .SAT...S winds 5 kt. Waves less than 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ533-020800- Chesapeake Bay from North Beach to Drum Point- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...SW winds 10 kt. Waves 1 ft. Showers with isolated tstms late this evening, then showers. Patchy fog. Vsby 1 NM or less. .WED...N winds 5 kt. Waves less than 1 ft. Showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds 5 kt. Waves flat. .THU...NW winds 5 kt. Waves less than 1 ft. .THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...S winds 5 kt. Waves less than 1 ft. .SAT...NE winds 5 kt...becoming S. Waves 1 ft or less. .SUN...S winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ541-020800- Choptank River to Cambridge MD and the Little Choptank River- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...SW winds 10 kt. Waves 1 ft. Showers with isolated tstms late this evening, then showers. Vsby 1 NM or less... increasing to 1 to 3 NM. .WED...NW winds around 5 kt. Waves 1 ft. Showers. Vsby 1 to 3 NM. .WED NIGHT...SW winds around 5 kt. Waves flat. .THU...NW winds 5 kt. Waves less than 1 ft. .THU NIGHT...NW winds 5 kt. Waves less than 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...SE winds around 5 kt. Waves flat. .SAT...SW winds around 5 kt...becoming S. Waves 1 ft or less. .SUN...S winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ542-020800- Patuxent River to Broomes Island MD- 1034 PM EDT Tue Jul 1 2025 .REST OF TONIGHT...W winds 5 kt. Waves less than 1 ft. Showers and scattered tstms late this evening, then showers. Patchy fog. Vsby 1 NM or less. .WED...NW winds 5 kt. Waves less than 1 ft. Showers and scattered tstms. Vsby 1 to 3 NM. .WED NIGHT...SW winds around 5 kt. Waves 1 ft. .THU...NW winds around 5 kt. Waves 1 ft. .THU NIGHT...NW winds around 5 kt. Waves 1 ft. .FRI...N winds 5 kt. Waves less than 1 ft. .FRI NIGHT...SE winds around 5 kt. Waves 1 ft or less. .SAT...S winds around 5 kt. Waves 1 ft. .SUN...S winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ534-020800- Chesapeake Bay from Drum Point to Smith Point- 1034 PM EDT Tue Jul 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT WEDNESDAY... .REST OF TONIGHT...W winds 10 kt...becoming SW late. Gusts up to 20 kt. Waves 2 ft. Showers and scattered tstms late this evening, then showers with isolated tstms. Vsby 1 NM or less. .WED...NW winds 5 to 10 kt with gusts to 20 kt... becoming N late. Waves 1 to 2 ft. Showers and scattered tstms. Vsby 1 NM or less. .WED NIGHT...SW winds 5 kt. Waves less than 1 ft. .THU...NW winds 5 kt. Waves less than 1 ft. .THU NIGHT...W winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...SE winds 5 kt. Waves less than 1 ft. .SAT...NE winds 5 kt...becoming S. Waves 1 ft or less. .SUN...S winds 10 to 15 kt. Waves 1 to 2 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ543-020800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 1034 PM EDT Tue Jul 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT WEDNESDAY... .REST OF TONIGHT...W winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft. Showers and scattered tstms late this evening, then showers with isolated tstms. Vsby 1 NM or less. .WED...W winds 5 to 10 kt. Gusts up to 20 kt until late afternoon. Waves 1 to 2 ft. Showers and scattered tstms. Vsby 1 NM or less. .WED NIGHT...SW winds 5 kt. Waves less than 1 ft. .THU...NW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...NE winds 5 to 10 kt...becoming S after midnight. Waves 1 ft or less. .SAT...SE winds 5 to 10 kt...becoming S after midnight. Waves 1 ft or less. .SUN...S winds 10 to 15 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$