Expires:202101200900;;182771 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. ANZ535-200900- Tidal Potomac from Key Bridge to Indian Head- 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 WEDNESDAY EVENING... .TONIGHT...W winds 5 kt. Waves less than 1 ft. Isolated snow showers after midnight with vsby 1 to 3 NM. .WED...NW winds 15 to 20 kt. Gusts up to 20 kt... increasing to 35 kt in the late morning and afternoon. Waves 2 ft. .WED NIGHT...NW winds 10 to 15 kt with gusts to 20 kt...becoming S 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. Gusts up to 20 kt in the evening. Waves 1 ft. .FRI...W winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. .FRI NIGHT...NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. .SAT...NW winds 5 to 10 kt. Waves 1 ft. .SUN...N winds around 5 kt. Waves 1 ft. $$