Expires:202101200900;;182776 FZUS51 KLWX 192344 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 644 PM EST Tue Jan 19 2021 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. ANZ538-200900- Patapsco River including Baltimore Harbor- 644 PM EST Tue Jan 19 2021 ...GALE WARNING IN EFFECT FROM 6 AM EST WEDNESDAY THROUGH WEDNESDAY AFTERNOON... ...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE WEDNESDAY NIGHT... .TONIGHT...W winds 5 to 10 kt. Waves 1 ft or less. Isolated snow showers after midnight with vsby 1 to 3 NM. .WED...NW winds 15 to 20 kt with gusts to 35 kt. Waves 2 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts to 25 kt...becoming SW around 5 kt after midnight. Waves 1 ft. .THU...SW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. .THU NIGHT...W winds 5 kt. Waves less than 1 ft. .FRI...W winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. .FRI NIGHT...NW winds 10 kt with gusts to 20 kt. Waves 1 ft. .SAT...NW winds 5 to 10 kt. Waves 1 ft. .SUN...NW winds 5 to 10 kt. Waves 1 ft or less. $$