Coastal Waters Forecast
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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931 FZUS51 KLWX 181735 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 134 PM EDT Wed Sep 18 2024 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. ANZ500-190800- 134 PM EDT Wed Sep 18 2024 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... Low pressure over the southern Appalachians will weaken today. Meanwhile, another low will develop off the coast by tonight and slowly drift eastward through Friday. A backdoor cold front may push though the area Saturday. Small Craft Advisories may be needed for portions of the waters Thursday and again Friday night through Sunday. $$ ANZ535-190800- Tidal Potomac from Key Bridge to Indian Head- 134 PM EDT Wed Sep 18 2024 .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. Showers likely with a chance of tstms. Vsby 1 NM or less. .TONIGHT...N winds 5 kt. Waves less than 1 ft. A chance of showers and tstms. .THU...N winds 5 kt. Waves less than 1 ft. .THU NIGHT...N winds around 5 kt. Waves 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...NE winds 5 kt. Waves less than 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ536-190800- Tidal Potomac from Indian Head to Cobb Island- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING... .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. Showers likely with a chance of tstms. Vsby 1 NM or less. .TONIGHT...N winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. Vsby 1 to 3 NM. .THU...N winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...NW winds 5 kt. Waves less than 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ537-190800- Tidal Potomac from Cobb Island to Smith Point- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NE winds 10 kt with gusts to 20 kt. Waves 2 ft. A chance of showers and tstms. .TONIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance of showers and tstms. .THU...N winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...NW winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 10 to 15 kt. Waves 1 to 2 ft. .FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT...NE winds 10 to 15 kt. Waves 2 ft. .SUN...NE winds 10 to 15 kt. Waves 2 to 3 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ530-190800- Chesapeake Bay north of Pooles Island- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM EDT THIS EVENING... .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. Showers likely with a slight chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers. Vsby 1 NM or less. .THU...N winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...NE winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ531-190800- Chesapeake Bay from Pooles Island to Sandy Point- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NE winds 10 kt with gusts to 20 kt. Waves 2 ft. Showers likely with a slight chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 10 kt with gusts to 20 kt. Waves 2 ft. A chance of showers. Vsby 1 NM or less. .THU...N winds 5 to 10 kt. Waves 1 to 2 ft. .THU NIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 10 kt. Waves 2 ft. .FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT...NE winds 10 to 15 kt...becoming E. Waves 1 to 2 ft. .SUN...NE winds 10 to 15 kt. Waves 1 to 2 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ538-190800- Patapsco River including Baltimore Harbor- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM EDT THIS EVENING... .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. Showers likely with a slight chance of tstms. .TONIGHT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers. .THU...N winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ539-190800- Chester River to Queenstown MD- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM EDT THIS EVENING... .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. Showers likely with a slight chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 10 kt. Waves 1 ft. A chance of showers. Vsby 1 NM or less. .THU...N winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 10 kt. Waves 1 ft. .FRI NIGHT...NE winds 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ532-190800- Chesapeake Bay from Sandy Point to North Beach- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers likely with a slight chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance of showers. Vsby 1 NM or less. .THU...N winds 10 kt. Waves 2 ft. A chance of showers. .THU NIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 10 to 15 kt. Waves 2 ft. .FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT...NE winds 10 to 15 kt. Waves 1 to 2 ft. .SUN...NE winds 10 to 15 kt. Waves 2 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ540-190800- Eastern Bay- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NE winds 10 kt with gusts to 20 kt. Waves 1 ft. Showers likely with a slight chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 10 kt with gusts to 20 kt. Waves 1 ft. A chance of showers. Vsby 1 NM or less. .THU...N winds 5 to 10 kt. Waves 1 ft. A chance of showers. .THU NIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 10 kt. Waves 1 ft. .FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .SAT...NE winds 10 to 15 kt. Waves 1 ft. .SUN...NE winds 10 to 15 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ533-190800- Chesapeake Bay from North Beach to Drum Point- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NE winds 15 kt with gusts to 20 kt. Waves 2 to 3 ft. Showers likely with a chance of tstms. Vsby 1 NM or less. .TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft. A chance of showers and tstms. Vsby 1 NM or less. .THU...N winds 10 kt. Waves 2 ft. A chance of showers. .THU NIGHT...N winds 5 to 10 kt. Waves 1 to 2 ft. .FRI...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT...NE winds 10 to 15 kt. Waves 2 ft. .SUN...NE winds 10 to 15 kt. Waves 2 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ541-190800- Choptank River to Cambridge MD and the Little Choptank River- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showers likely with a slight chance of tstms. .TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. A chance of showers. .THU...N winds 5 to 10 kt. Waves 1 ft. A chance of showers. .THU NIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 10 kt. Waves 1 ft. .FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .SAT...NE winds 10 to 15 kt. Waves 1 to 2 ft. .SUN...NE winds 10 to 15 kt. Waves 1 to 2 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ542-190800- Patuxent River to Broomes Island MD- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM EDT THIS EVENING... .THIS AFTERNOON...NE winds 10 kt. Waves 1 ft. Showers likely with a chance of tstms. .TONIGHT...NE winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms. .THU...N winds 5 to 10 kt. Waves 1 ft. .THU NIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 5 to 10 kt. Waves 1 ft. .FRI NIGHT...NE winds 5 to 10 kt. Waves 1 ft. .SAT...NE winds 5 to 10 kt. Waves 1 ft. .SUN...NE winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ534-190800- Chesapeake Bay from Drum Point to Smith Point- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NE winds 15 kt with gusts to 20 kt. Waves 2 ft. A chance of showers and tstms. .TONIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance of showers and tstms. Vsby 1 to 3 NM. .THU...N winds 10 to 15 kt. Waves 2 ft. .THU NIGHT...N winds 5 to 10 kt. Waves 2 ft. .FRI...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. .SAT...NE winds 10 to 15 kt. Waves 2 ft. .SUN...NE winds 10 to 15 kt. Waves 2 to 3 ft. Winds and waves higher and visibilities lower in and near tstms. $$ ANZ543-190800- Tangier Sound and the inland waters surrounding Bloodsworth Island- 134 PM EDT Wed Sep 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NE winds 15 kt with gusts to 20 kt. Waves 2 ft. A chance of showers and tstms. .TONIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. A chance of showers and tstms. Vsby 1 to 3 NM. .THU...N winds 10 kt. Waves 1 ft. .THU NIGHT...N winds 5 to 10 kt. Waves 1 ft. .FRI...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. .FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. .SAT...NE winds 10 to 15 kt. Waves 1 to 2 ft. .SUN...NE winds 10 to 15 kt. Waves 1 to 2 ft. Winds and waves higher and visibilities lower in and near tstms. $$