Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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928 FZUS51 KLWX 171951 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 351 PM EDT Thu Apr 17 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. ANZ500-180800- 351 PM EDT Thu Apr 17 2025 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... High pressure will move offshore tonight. A warm front will pass through the waters Friday before the next cold front approaches Saturday into Saturday night. The boundary will pass through the area Sunday before settling to our south early next week. Boaters should be aware of the threats of boating in cold water, even when air temperatures are warm. Visit weather.gov/safety/coldwater for more information. $$ ANZ535-180800- Tidal Potomac from Key Bridge to Indian Head- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...NW winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds around 5 kt. Waves 1 ft. .FRI...S winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .SAT...SW winds 10 kt with gusts to 20 kt. Waves 1 ft. .SAT NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves 1 ft. .SUN...NE winds 5 kt. Waves less than 1 ft. .MON...SE winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft. A chance of showers. $$ ANZ536-180800- Tidal Potomac from Indian Head to Cobb Island- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...NW winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds 5 kt. Waves less than 1 ft. .FRI...S winds 10 to 15 kt. Gusts up to 25 kt. Waves 1 to 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .SUN...N winds 5 to 10 kt...becoming E. Waves 1 ft. .MON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. $$ ANZ537-180800- Tidal Potomac from Cobb Island to Smith Point- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...NW winds 10 kt. Waves 1 ft. .TONIGHT...S winds 5 to 10 kt. Waves 1 ft. .FRI...S winds 10 to 15 kt. Gusts up to 20 kt. Waves 1 to 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .SUN...N winds 5 to 10 kt...becoming E. Waves 1 ft. .MON...SE winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft. A chance of showers through the night. $$ ANZ530-180800- Chesapeake Bay north of Pooles Island- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...W winds 10 kt. Waves 1 ft. .TONIGHT...SW winds around 5 kt. Waves 1 ft. .FRI...S winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft. .SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT NIGHT...SW winds 10 to 15 kt...becoming W 5 to 10 kt after midnight. Waves 1 to 2 ft. .SUN...N winds 5 to 10 kt...becoming NE after midnight. Waves 1 ft. .MON...SE winds 5 to 10 kt...becoming S after midnight. Waves 1 ft. A chance of showers through the night. $$ ANZ531-180800- Chesapeake Bay from Pooles Island to Sandy Point- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds 5 to 10 kt. Waves 1 ft. .FRI...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .FRI NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT NIGHT...SW winds 10 to 15 kt...becoming W after midnight. Waves 1 to 2 ft. .SUN...N winds 5 to 10 kt...becoming E after midnight. Waves 1 ft. .MON...SE winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft. A chance of showers. $$ ANZ538-180800- Patapsco River including Baltimore Harbor- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...W winds 15 kt. Waves 1 ft. .TONIGHT...SW winds 5 kt. Waves flat. .FRI...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .SAT...SW winds 10 kt. Waves 1 ft. .SAT NIGHT...W winds 5 to 10 kt. Waves 1 ft. .SUN...N winds 5 to 10 kt...becoming E after midnight. Waves 1 ft or less. .MON...SE winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft. A chance of showers. $$ ANZ539-180800- Chester River to Queenstown MD- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...W winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds 5 kt. Waves less than 1 ft. .FRI...S winds 5 to 10 kt with gusts to 20 kt... increasing to 15 to 20 kt with gusts to 25 kt in the afternoon. Waves 1 to 2 ft. .FRI NIGHT...S winds 15 kt with gusts to 20 kt. Waves 2 ft. .SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT NIGHT...SW winds 10 kt. Waves 1 to 2 ft. .SUN...N winds 5 to 10 kt...becoming E after midnight. Waves 1 ft or less. .MON...SE winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft. A chance of showers through the night. $$ ANZ532-180800- Chesapeake Bay from Sandy Point to North Beach- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...S winds 10 kt. Waves 1 ft. .TONIGHT...S winds 5 to 10 kt. Waves 1 ft. .FRI...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .FRI NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. .SAT...SW winds 15 to 20 kt. Waves 2 to 3 ft. .SAT NIGHT...SW winds 10 to 15 kt...becoming W after midnight. Gusts up to 20 kt. Waves 2 ft. .SUN...N winds 5 to 10 kt...becoming E after midnight. Waves 1 ft. .MON...SE winds 5 to 10 kt...becoming SW after midnight. Waves 1 to 2 ft. A chance of showers through the night. $$ ANZ540-180800- Eastern Bay- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds 5 to 10 kt. Waves 1 ft or less. .FRI...S winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. .FRI NIGHT...S winds 15 kt with gusts to 20 kt. Waves 2 ft. .SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT NIGHT...SW winds 10 to 15 kt. Waves 1 to 2 ft. .SUN...N winds 5 to 10 kt...becoming E after midnight. Waves 1 ft. .MON...SE winds 5 to 10 kt...becoming SW after midnight. Waves 1 ft. A chance of showers through the night. $$ ANZ533-180800- Chesapeake Bay from North Beach to Drum Point- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...SE winds 10 kt. Waves 1 ft. .TONIGHT...S winds 5 to 10 kt. Waves 1 ft. .FRI...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. .FRI NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. .SAT...SW winds 15 to 20 kt. Waves 2 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SUN...N winds 5 to 10 kt...becoming E after midnight. Waves 1 ft. .MON...SE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers through the night. $$ ANZ541-180800- Choptank River to Cambridge MD and the Little Choptank River- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds 5 to 10 kt. Waves 1 ft. .FRI...S winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. .FRI NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. .SAT...SW winds 15 to 20 kt. Waves 2 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .SUN...N winds 5 to 10 kt...becoming E after midnight. Waves 1 ft. .MON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. $$ ANZ542-180800- Patuxent River to Broomes Island MD- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. .TONIGHT...S winds 5 kt. Waves less than 1 ft. .FRI...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .SAT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves 1 ft. .SUN...N winds 5 to 10 kt...becoming E. Waves 1 ft. .MON...SE winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night. $$ ANZ534-180800- Chesapeake Bay from Drum Point to Smith Point- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...SW winds 10 kt. Waves 1 ft. .TONIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft. .FRI...S winds 15 to 20 kt. Gusts up to 20 kt... increasing to 25 kt late. Waves 2 to 3 ft. .FRI NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. .SAT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SUN...NW winds 5 to 10 kt...becoming E. Waves 1 to 2 ft. .MON...SE winds 10 to 15 kt...becoming S after midnight. Waves 1 to 2 ft. A chance of showers through the night. $$ ANZ543-180800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 351 PM EDT Thu Apr 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING... .REST OF THIS AFTERNOON...W winds 10 kt. Waves 1 ft. .TONIGHT...S winds 5 to 10 kt. Waves 1 ft. .FRI...S winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. .FRI NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. .SAT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .SUN...NW winds 5 to 10 kt...becoming E. Waves 1 ft. .MON...SE winds 10 to 15 kt...becoming S after midnight. Waves 1 ft. A chance of showers through the night. $$