FZUS51 KLWX 142139 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 539 PM EDT Tue Apr 14 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. ANZ500-150900- 539 PM EDT Tue Apr 14 2026 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... It will remain very warm and dry through Friday as an area of high pressure builds across the Mid-Atlantic. A cold front late this weekend could bring the next chance for widespread showers. Small Craft Advisories may be needed at times each afternoon Wednesday through Thursday. $$ ANZ535-150900- Tidal Potomac from Key Bridge to Indian Head- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...NW winds around 5 kt. Waves 1 ft. .SAT...NW winds around 5 kt...becoming S. Waves 1 ft. A chance of showers after midnight. .SUN...NW winds 10 to 15 kt. Waves 1 ft. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. $$ ANZ536-150900- Tidal Potomac from Indian Head to Cobb Island- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...NW winds around 5 kt. Waves 1 ft. .SAT...NW winds around 5 kt...becoming S. Waves 1 ft. .SUN...W winds 10 to 15 kt...becoming NW after midnight. Waves 1 ft. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. $$ ANZ537-150900- Tidal Potomac from Cobb Island to Smith Point- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 10 kt. Waves 1 ft. .WED...S winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...W winds around 5 kt. Waves 1 ft or less. .SAT...N winds around 5 kt...becoming SE 10 to 15 kt in the afternoon and evening, then becoming S after midnight. Waves 1 ft or less...building to 2 ft. .SUN...SW winds 10 to 15 kt...becoming NW 15 to 20 kt. Waves 2 to 3 ft. A chance of showers. $$ ANZ530-150900- Chesapeake Bay north of Pooles Island- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt early this evening. Waves 1 ft or less. Scattered showers and tstms this evening. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft or less. .THU...SW winds around 5 kt. Waves 1 ft or less. .THU NIGHT...SW winds around 5 kt. Waves 1 ft or less. .FRI...W winds around 5 kt. Waves 1 ft. A chance of showers. .FRI NIGHT...NW winds around 5 kt. Waves 1 ft or less. .SAT...SE winds 5 to 10 kt. Waves 1 ft or less. A chance of showers after midnight. .SUN...W winds 10 to 15 kt...becoming NW 15 to 20 kt. Waves 1 to 2 ft. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ531-150900- Chesapeake Bay from Pooles Island to Sandy Point- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt early this evening. Waves 1 to 2 ft. Scattered showers and tstms this evening. .WED...S winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft or less. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers. .FRI NIGHT...NW winds around 5 kt. Waves 1 ft or less. .SAT...NE winds around 5 kt...becoming SE 10 to 15 kt. Waves 1 ft or less. A chance of showers after midnight. .SUN...SW winds 10 to 15 kt...becoming NW 15 to 20 kt. Waves 1 to 2 ft...building to 3 ft after midnight. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ538-150900- Patapsco River including Baltimore Harbor- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft or less. Scattered showers and tstms this evening. .WED...SW winds around 5 kt. Waves 1 ft or less. .WED NIGHT...SW winds around 5 kt. Waves 1 ft or less. .THU...SW winds around 5 kt. Waves 1 ft or less. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft or less. .FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers. .FRI NIGHT...NW winds around 5 kt. Waves flat. .SAT...NE winds around 5 kt...becoming SE. Waves 1 ft or less. A chance of showers after midnight. .SUN...W winds 10 to 15 kt. Waves 1 ft. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ539-150900- Chester River to Queenstown MD- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. A slight chance of showers and tstms this evening. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft or less. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers. .FRI NIGHT...NW winds around 5 kt. Waves 1 ft or less. .SAT...E winds around 5 kt...becoming SE. Waves 1 ft or less. A chance of showers after midnight. .SUN...SW winds 10 to 15 kt...becoming NW 15 to 20 kt. Waves 1 to 2 ft...building to 3 ft after midnight. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ532-150900- Chesapeake Bay from Sandy Point to North Beach- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt early this evening. Waves 1 to 2 ft. .WED...S winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft. .THU...S winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers. .FRI NIGHT...W winds around 5 kt. Waves 1 ft or less. .SAT...NE winds around 5 kt...becoming SE 10 to 15 kt. Waves 1 ft or less...building to 2 ft. .SUN...SW winds 10 to 15 kt...becoming NW 20 to 25 kt. Waves 2 to 3 ft. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. $$ ANZ540-150900- Eastern Bay- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 kt. Waves less than 1 ft. A chance of showers. .FRI NIGHT...W winds around 5 kt. Waves 1 ft or less. .SAT...NE winds around 5 kt...becoming S. Waves 1 ft or less. .SUN...SW winds 10 to 15 kt...becoming NW 15 to 20 kt. Waves 2 ft. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. $$ ANZ533-150900- Chesapeake Bay from North Beach to Drum Point- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening. Waves 1 to 2 ft. .WED...S winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. .THU...S winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...W winds around 5 kt. Waves 1 ft or less. .SAT...N winds around 5 kt...becoming SE 10 to 15 kt. Waves 1 ft or less...building to 2 ft. .SUN...SW winds 10 to 15 kt...becoming NW 20 to 25 kt. Waves 2 to 3 ft. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. $$ ANZ541-150900- Choptank River to Cambridge MD and the Little Choptank River- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. .THU...S winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 kt. Waves less than 1 ft. .FRI NIGHT...W winds around 5 kt. Waves 1 ft or less. .SAT...N winds around 5 kt...becoming S 10 to 15 kt. Waves 1 ft or less. .SUN...SW winds 10 to 15 kt...becoming NW 20 to 25 kt. Waves 2 to 3 ft. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. $$ ANZ542-150900- Patuxent River to Broomes Island MD- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 5 kt. Waves less than 1 ft. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 kt. Waves less than 1 ft. .FRI NIGHT...W winds around 5 kt. Waves 1 ft. .SAT...NE winds around 5 kt...becoming SE. Waves 1 ft. .SUN...W winds 10 to 15 kt...becoming NW. Waves 1 ft. A chance of showers in the morning, then showers likely through the night. A chance of showers after midnight. $$ ANZ534-150900- Chesapeake Bay from Drum Point to Smith Point- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt until early morning. Waves 1 to 2 ft. .WED...S winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 10 kt. Waves 2 ft. .THU...S winds 5 to 10 kt. Waves 1 to 2 ft. .THU NIGHT...SW winds 10 to 15 kt. Waves 2 ft. .FRI...SW winds 5 to 10 kt. Waves 1 to 2 ft. .FRI NIGHT...W winds 5 kt. Waves less than 1 ft. .SAT...N winds 5 kt...becoming SE 15 to 20 kt. Waves 1 to 2 ft... building to 3 ft after midnight. .SUN...SW winds 15 to 20 kt...becoming NW 20 to 25 kt. Waves 3 ft. A chance of showers. $$ ANZ543-150900- Tangier Sound and the inland waters surrounding Bloodsworth Island- 539 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt until early morning. Waves 1 ft. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .THU...S winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 10 to 15 kt. Waves 1 ft. .FRI...SW winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...W winds 5 kt. Waves less than 1 ft. .SAT...NW winds 5 kt...becoming S 10 to 15 kt. Waves 1 ft or less... building to 2 ft after midnight. .SUN...SW winds 15 to 20 kt...becoming NW 20 to 25 kt. Waves 2 to 3 ft. A chance of showers. $$