FZUS51 KLWX 142058 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 458 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. ANZ500-150800- 458 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. $$ ANZ535-150800- Tidal Potomac from Key Bridge to Indian Head- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...NW winds 5 to 10 kt. Waves 1 ft. .SAT...NW winds around 5 kt...becoming S. Waves 1 ft. A chance of showers after midnight. $$ ANZ536-150800- Tidal Potomac from Indian Head to Cobb Island- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...SW winds 10 kt. Waves 1 ft. .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...NW winds 5 to 10 kt. Waves 1 ft. .SAT...NW winds around 5 kt...becoming S. Waves 1 ft. $$ ANZ537-150800- Tidal Potomac from Cobb Island to Smith Point- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...SW winds 10 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .WED...S winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds 5 to 10 kt. Waves 1 ft or less. .SAT...N winds around 5 kt...becoming SE 10 to 15 kt in the afternoon and evening, then becoming S after midnight. Waves 1 ft or less...building to 2 ft. $$ ANZ530-150800- Chesapeake Bay north of Pooles Island- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt early in the evening. Waves 1 ft or less. A chance of showers. .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...NW winds around 5 kt. Waves 1 ft or less. A chance of showers through the night. .SAT...SE winds 5 to 10 kt. Waves 1 ft or less. A chance of showers after midnight. $$ ANZ531-150800- Chesapeake Bay from Pooles Island to Sandy Point- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...S winds 15 kt with gusts to 20 kt. Waves 2 ft. .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt... diminishing to 5 kt after midnight. Waves 1 to 2 ft. .WED...S winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft or less. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds around 5 kt. Waves 1 ft or less. A chance of showers through the night. .SAT...NE winds around 5 kt...becoming SE 10 to 15 kt. Waves 1 ft or less. A chance of showers after midnight. $$ ANZ538-150800- Patapsco River including Baltimore Harbor- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...SW winds 10 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt until early morning... becoming light. Waves 1 ft or less. .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...NW winds around 5 kt. Waves 1 ft or less. A chance of showers through the night. .SAT...NE winds around 5 kt...becoming SE. Waves 1 ft or less. A chance of showers after midnight. $$ ANZ539-150800- Chester River to Queenstown MD- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft or less. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds around 5 kt. Waves 1 ft or less. A chance of showers through the night. .SAT...E winds around 5 kt...becoming SE. Waves 1 ft or less. A chance of showers after midnight. $$ ANZ532-150800- Chesapeake Bay from Sandy Point to North Beach- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...S winds 15 kt with gusts to 20 kt. Waves 2 ft. .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt... diminishing to 5 kt late. 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 around 5 kt. Waves 1 ft or less. A chance of showers through the night. .SAT...NE winds around 5 kt...becoming SE 10 to 15 kt. Waves 1 ft or less...building to 2 ft. $$ ANZ540-150800- Eastern Bay- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. .THU...SW winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds around 5 kt. Waves 1 ft or less. A chance of showers through the night. .SAT...NE winds around 5 kt...becoming S. Waves 1 ft or less. $$ ANZ533-150800- Chesapeake Bay from North Beach to Drum Point- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 2 ft. .TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the 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 or less. .SAT...N winds around 5 kt...becoming SE 10 to 15 kt. Waves 1 ft or less...building to 2 ft. $$ ANZ541-150800- Choptank River to Cambridge MD and the Little Choptank River- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 kt. Waves 1 ft. .WED...SW winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 5 to 10 kt. Waves 1 ft. .THU...S winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .FRI...W winds around 5 kt. Waves 1 ft or less. .SAT...N winds around 5 kt...becoming S 10 to 15 kt. Waves 1 ft or less. $$ ANZ542-150800- Patuxent River to Broomes Island MD- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...SW winds 10 kt. Waves 1 ft. .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 around 5 kt. Waves 1 ft. .SAT...NE winds around 5 kt...becoming SE. Waves 1 ft. $$ ANZ534-150800- Chesapeake Bay from Drum Point to Smith Point- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 2 ft. .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt until early morning. Waves 1 to 2 ft. .WED...S winds 5 to 10 kt. Waves 1 ft. .WED NIGHT...S winds 10 kt. Waves 2 ft. .THU...S winds 5 to 10 kt. Waves 1 to 2 ft. .THU NIGHT...SW winds 10 to 15 kt. Waves 2 ft. .FRI...SW winds 5 to 10 kt. Waves 1 to 2 ft. .SAT...N winds 5 kt...becoming SE 15 to 20 kt. Waves 1 to 2 ft... building to 3 ft after midnight. $$ ANZ543-150800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 458 PM EDT Tue Apr 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THIS AFTERNOON...S winds 10 kt with gusts to 20 kt. Waves 1 ft. .TONIGHT...SW winds 5 to 10 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 or less. .SAT...NW winds 5 kt...becoming S 10 to 15 kt. Waves 1 ft or less... building to 2 ft after midnight. $$