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Champlain, VA Coastal Forecast

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Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
657 AM EST Tue Dec 16 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.

ANZ500-162100-
657 AM EST Tue Dec 16 2025

.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...

Arctic high pressure moves offshore today. Small Craft Advisories
may be needed Tuesday night for portions of the waters in southerly
channeling. Then SCAs are likely Thursday into Thursday night ahead
of a strong cold front passage, with Gale-force winds not out of the
question. Strong post-frontal winds are expected Friday as well,
with SCAs likely and Gales possible once again.

$$

ANZ535-162100-
Tidal Potomac from Key Bridge to Indian Head-
657 AM EST Tue Dec 16 2025

.TODAY...W winds around 5 kt. Waves 1 ft or less.
.TONIGHT...S winds around 5 kt. Waves 1 ft.
.WED...SW winds 5 kt. Waves less than 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft.
.THU...SE winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Waves 1 ft.
.THU NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
Rain.
.FRI...W winds 10 to 15 kt...becoming NW 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of rain in the morning.
.SAT...SW winds 10 to 15 kt. Waves 1 ft.

$$

ANZ536-162100-
Tidal Potomac from Indian Head to Cobb Island-
657 AM EST Tue Dec 16 2025

.TODAY...SE winds around 5 kt. Waves 1 ft or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft.
.THU...SE winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Waves 1 ft.
.THU NIGHT...S winds 20 to 25 kt with gusts to 30 kt. Waves 2 ft.
Rain.
.FRI...W winds 15 kt...becoming NW. Waves 1 to 2 ft. A chance of
rain in the morning.
.SAT...S winds 15 to 20 kt. Waves 1 ft.

$$

ANZ537-162100-
Tidal Potomac from Cobb Island to Smith Point-
657 AM EST Tue Dec 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

.TODAY...W winds 5 to 10 kt...becoming SE this afternoon. Waves 1 ft
or less.
.TONIGHT...S winds 10 to 15 kt...becoming SW late. Waves 1 ft.
.WED...SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...SE winds 10 to 15 kt. Waves 1 ft.
.THU NIGHT...S winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft.
Rain.
.FRI...W winds 15 to 20 kt...becoming NW. Waves 2 to 3 ft. A chance
of rain in the morning.
.SAT...SW winds 10 to 15 kt...increasing to 15 to 20 kt. Waves 1 to
2 ft.

$$

ANZ530-162100-
Chesapeake Bay north of Pooles Island-
657 AM EST Tue Dec 16 2025

.TODAY...W winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...NW winds around 5 kt. Waves 1 ft or less.
.THU...SE winds 5 to 10 kt. Waves 1 ft or less.
.THU NIGHT...S winds 25 to 30 kt. Waves 2 ft. Rain.
.FRI...W winds 15 to 20 kt. Waves 1 to 2 ft. A chance of rain in the
morning.
.SAT...SW winds 5 to 10 kt...becoming S 10 to 15 kt. Waves 1 ft.

$$

ANZ531-162100-
Chesapeake Bay from Pooles Island to Sandy Point-
657 AM EST Tue Dec 16 2025

.TODAY...NW winds 5 to 10 kt...becoming SW late. Waves 1 ft or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft or less.
.THU...SE winds 10 to 15 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 3 ft. Rain.
.FRI...W winds 15 to 20 kt...becoming NW 10 to 15 kt after midnight.
Waves 2 to 3 ft. A chance of rain in the morning.
.SAT...SW winds 10 to 15 kt...becoming S 15 to 20 kt. Waves 1 to
2 ft...building to 2 to 3 ft.

$$

ANZ538-162100-
Patapsco River including Baltimore Harbor-
657 AM EST Tue Dec 16 2025

.TODAY...W winds 5 kt. Waves flat.
.TONIGHT...SW winds 5 kt. Waves flat.
.WED...SW winds 5 kt. Waves less than 1 ft.
.WED NIGHT...N winds around 5 kt. Waves flat.
.THU...SE winds 5 to 10 kt. Waves 1 ft or less.
.THU NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft. Rain.
.FRI...W winds 15 to 20 kt...becoming NW 5 to 10 kt after midnight.
Waves 1 to 2 ft. A chance of rain in the morning.
.SAT...SW winds 5 to 10 kt. Waves 1 ft.

$$

ANZ539-162100-
Chester River to Queenstown MD-
657 AM EST Tue Dec 16 2025

.TODAY...NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft or less.
.THU...SE winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft. Rain.
.FRI...W winds 15 to 20 kt...becoming NW. Waves 3 ft...subsiding to
2 ft after midnight. A chance of rain in the morning.
.SAT...SW winds 10 to 15 kt...becoming S. Waves 1 to 2 ft.

$$

ANZ532-162100-
Chesapeake Bay from Sandy Point to North Beach-
657 AM EST Tue Dec 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

.TODAY...NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less.
.TONIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.WED...SW winds 5 to 10 kt. Waves 2 ft.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 4 ft. Rain.
.FRI...W winds 20 kt...becoming NW. Waves 2 to 3 ft. A chance of
rain in the morning.
.SAT...W winds 5 to 10 kt...becoming S 15 to 20 kt. Waves 1 to
2 ft...building to 3 ft.

$$

ANZ540-162100-
Eastern Bay-
657 AM EST Tue Dec 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

.TODAY...NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft or less.
.THU...SE winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Waves 1 ft.
.THU NIGHT...S winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft. Rain.
.FRI...SW winds 15 to 20 kt...becoming NW. Waves 2 to 3 ft. A chance
of rain in the morning.
.SAT...SW winds 10 to 15 kt...becoming S 15 to 20 kt. Waves 1 to
2 ft.

$$

ANZ533-162100-
Chesapeake Bay from North Beach to Drum Point-
657 AM EST Tue Dec 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

.TODAY...NW winds 5 to 10 kt...becoming W this afternoon. Waves 1 ft
or less.
.TONIGHT...S winds 10 to 15 kt. Waves 1 to 2 ft.
.WED...SW winds 10 to 15 kt. Waves 2 ft.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 4 ft. Rain.
.FRI...SW winds 15 to 20 kt...becoming NW 10 to 15 kt after
midnight. Waves 3 ft...subsiding to 2 ft after midnight. A chance of
rain in the morning.
.SAT...W winds 5 to 10 kt...becoming S 20 to 25 kt. Waves 1 to
2 ft...building to 3 ft.

$$

ANZ541-162100-
Choptank River to Cambridge MD and the Little Choptank River-
657 AM EST Tue Dec 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

.TODAY...NW winds 5 to 10 kt...becoming S late. Waves 1 ft or less.
.TONIGHT...S winds 10 to 15 kt. Waves 1 ft.
.WED...SW winds 10 to 15 kt. Waves 1 ft.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 3 ft. Rain.
.FRI...SW winds 15 to 20 kt...becoming NW 10 to 15 kt after
midnight. Waves 2 to 3 ft. A chance of rain in the morning.
.SAT...W winds 5 to 10 kt...becoming S 20 to 25 kt. Waves 1 to 2 ft.


$$

ANZ542-162100-
Patuxent River to Broomes Island MD-
657 AM EST Tue Dec 16 2025

.TODAY...NW winds 5 kt. Waves less than 1 ft.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft.
.WED...SW winds 5 to 10 kt. Waves 1 ft.
.WED NIGHT...N winds 5 kt. Waves less than 1 ft.
.THU...SE winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...S winds 15 to 20 kt with gusts to 30 kt. Waves 1 ft.
Rain.
.FRI...W winds 15 kt...becoming NW. Waves 1 ft. A chance of rain in
the morning.
.SAT...SW winds 10 to 15 kt. Waves 1 ft.

$$

ANZ534-162100-
Chesapeake Bay from Drum Point to Smith Point-
657 AM EST Tue Dec 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

.TODAY...W winds 15 kt with gusts to 20 kt...becoming NW 5 kt late
this morning and afternoon. Waves 1 to 2 ft... subsiding to flat
late.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.WED...SW winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 ft.
.WED NIGHT...NW winds 5 to 10 kt...becoming NE after midnight. Waves
1 ft.
.THU...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 4 ft. Rain.
.FRI...SW winds 20 kt...becoming NW. Waves 3 ft. A chance of rain in
the morning.
.SAT...NW winds 5 to 10 kt...becoming S 10 to 15 kt in the
afternoon, then becoming SW 20 to 25 kt. Waves 1 to 2 ft...building
to 3 ft.

$$

ANZ543-162100-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
657 AM EST Tue Dec 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING...

.TODAY...W winds 15 kt with gusts to 20 kt...diminishing to 5 kt
late this morning and afternoon. Waves 1 ft or less.
.TONIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the late
evening and overnight. Waves 1 to 2 ft.
.WED...SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.WED NIGHT...NW winds 5 to 10 kt...becoming NE after midnight. Waves
1 ft.
.THU...SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 25 to 30 kt. Waves 3 ft. Rain.
.FRI...SW winds 20 to 25 kt...becoming NW. Waves 2 to 3 ft. A chance
of rain in the morning.
.SAT...NW winds 5 to 10 kt...becoming S 15 to 20 kt. Waves 1 to
2 ft.

$$



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