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Arnold, MD Coastal Forecast

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Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
657 PM EST Fri Dec 26 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.

ANZ500-270900-
657 PM EST Fri Dec 26 2025

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

An area of low pressure will cross the area later today into
tonight. A second wave of low pressure will drive a stronger cold
front across the area Sunday night into Monday. Small Craft
Advisories may be needed Saturday. Advisories will likely be needed
Sunday night through Tuesday. Gale conditions are possible late
Monday through Tuesday.

$$

ANZ535-270900-
Tidal Potomac from Key Bridge to Indian Head-
657 PM EST Fri Dec 26 2025

.TONIGHT...S winds 10 kt...becoming W after midnight. Waves 1 ft.
Rain likely this evening. A slight chance of very light drizzle.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...E winds around 5 kt. Waves 1 ft or less.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt. Gusts up to 25 kt after midnight.
Waves 1 ft. A chance of rain.
.MON...SW winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft.
Rain likely.
.MON NIGHT...W winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft.
.TUE...W winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 1 to 2 ft.
.WED...W winds 10 to 15 kt. Waves 1 ft.

$$

ANZ536-270900-
Tidal Potomac from Indian Head to Cobb Island-
657 PM EST Fri Dec 26 2025

.TONIGHT...SW winds 10 kt...becoming NW late. Waves 1 ft. A chance
of rain this evening, then a slight chance of very light drizzle
after midnight.
.SAT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SUN...S winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft. A chance of rain.
.MON...SW winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. Rain
likely.
.MON NIGHT...W winds 20 to 25 kt with gusts to 30 kt. Waves 2 ft.
.TUE...W winds 15 to 20 kt...diminishing to 5 to 10 kt after
midnight. Waves 1 to 2 ft.
.WED...W winds 10 to 15 kt. Waves 1 ft.

$$

ANZ537-270900-
Tidal Potomac from Cobb Island to Smith Point-
657 PM EST Fri Dec 26 2025

.TONIGHT...S winds 10 kt...becoming NW late. Waves 1 ft. Rain likely
this evening with vsby 1 to 3 NM.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN...SE winds 5 to 10 kt. Waves 1 ft or less.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.MON...SW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. Rain
likely.
.MON NIGHT...W winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft.
.TUE...W winds 15 to 20 kt. Waves 2 to 3 ft.
.WED...W winds 10 to 15 kt. Waves 1 ft.

$$

ANZ530-270900-
Chesapeake Bay north of Pooles Island-
657 PM EST Fri Dec 26 2025

.TONIGHT...SE winds 5 to 10 kt...becoming N late. Waves 1 ft. Rain,
sleet, freezing rain with a chance of drizzle this evening, then a
slight chance of very light drizzle with a chance of freezing
drizzle after midnight. Patchy fog. Vsby 1 NM or less...increasing
to 1 to 3 NM after midnight.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.SUN...SE winds around 5 kt. Waves 1 ft. A chance of rain.
.SUN NIGHT...S winds 15 to 20 kt. Gusts up to 25 kt after midnight.
Waves 1 to 2 ft. A chance of rain.
.MON...SW winds 20 to 25 kt with gusts to 30 kt. Waves 2 ft. Rain.
.MON NIGHT...W winds 25 to 30 kt. Waves 3 ft.
.TUE...W winds 20 to 25 kt. Waves 2 to 3 ft...subsiding to 1 ft
after midnight.
.WED...W winds 10 to 15 kt. Waves 1 to 2 ft.

$$

ANZ531-270900-
Chesapeake Bay from Pooles Island to Sandy Point-
657 PM EST Fri Dec 26 2025

.TONIGHT...SE winds 5 to 10 kt...becoming N late. Waves 1 ft. Rain
with possible sleet and drizzle likely this evening, then a slight
chance of very light drizzle after midnight. Vsby 1 to 3 NM this
evening.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 1 ft or less.
.SUN...S winds 5 to 10 kt. Waves 1 ft or less. A chance of rain.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft. A chance of rain.
.MON...SW winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. Rain.
.MON NIGHT...W winds 25 to 30 kt. Waves 4 ft.
.TUE...W winds 25 to 30 kt...diminishing to 15 to 20 kt after
midnight. Waves 3 ft...subsiding to 2 ft after midnight.
.WED...W winds 10 to 15 kt. Waves 2 ft.

$$

ANZ538-270900-
Patapsco River including Baltimore Harbor-
657 PM EST Fri Dec 26 2025

.TONIGHT...S winds 5 to 10 kt...becoming N after midnight. Waves
1 ft or less. Rain, sleet with a chance of drizzle this evening,
then a slight chance of very light drizzle after midnight. Vsby 1 to
3 NM this evening.
.SAT...N winds 5 to 10 kt. Waves 1 ft.
.SAT NIGHT...NE winds around 5 kt. Waves 1 ft or less.
.SUN...S winds around 5 kt. Waves 1 ft or less. A chance of rain.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of rain.
.MON...SW winds 15 to 20 kt with gusts to 30 kt. Waves 2 ft. Rain.
.MON NIGHT...W winds 15 to 20 kt with gusts to 35 kt. Waves 2 ft.
.TUE...W winds 15 to 20 kt...diminishing to 10 kt after midnight.
Waves 1 to 2 ft.
.WED...W winds 10 to 15 kt. Waves 1 ft.

$$

ANZ539-270900-
Chester River to Queenstown MD-
657 PM EST Fri Dec 26 2025

.TONIGHT...S winds 5 to 10 kt...becoming N late. Waves 1 ft or less.
Rain with possible sleet and drizzle likely this evening, then a
slight chance of very light drizzle after midnight. Vsby 1 to 3 NM
this evening.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...NE winds 5 to 10 kt in the evening... becoming light.
Waves 1 ft or less.
.SUN...SE winds 5 to 10 kt. Waves 1 ft or less. A chance of rain.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of rain.
.MON...SW winds 15 to 20 kt...becoming W 20 to 25 kt in the
afternoon. Gusts up to 30 kt. Waves 3 ft. Rain.
.MON NIGHT...W winds 25 to 30 kt. Waves 4 ft.
.TUE...W winds 20 to 25 kt...diminishing to 15 kt after midnight.
Waves 3 ft...subsiding to 2 ft after midnight.
.WED...W winds 10 to 15 kt. Waves 2 ft.

$$

ANZ532-270900-
Chesapeake Bay from Sandy Point to North Beach-
657 PM EST Fri Dec 26 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON...

.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt... becoming SW
after midnight, then becoming NW late. Waves 1 to 2 ft. Rain with a
chance of drizzle this evening, then a slight chance of very light
drizzle after midnight. Vsby 1 to 3 NM this evening.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 1 to 2 ft.
.SUN...SE winds around 5 kt...becoming S 10 to 15 kt in the
afternoon. Waves flat...building to 2 ft in the afternoon. A chance
of rain.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. A
chance of rain.
.MON...SW winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. Rain
likely.
.MON NIGHT...W winds 25 to 30 kt. Waves 4 ft.
.TUE...W winds 25 to 30 kt...diminishing to 15 to 20 kt after
midnight. Waves 3 ft...subsiding to 2 ft after midnight.
.WED...W winds 15 kt. Waves 2 ft.

$$

ANZ540-270900-
Eastern Bay-
657 PM EST Fri Dec 26 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON...

.TONIGHT...S winds 10 kt...becoming SW after midnight, then becoming
NW late. Waves 1 ft. Rain with a chance of drizzle this evening,
then a slight chance of very light drizzle after midnight. Vsby 1 to
3 NM this evening.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...NE winds 5 to 10 kt until early morning...becoming
light. Waves 1 ft or less.
.SUN...SE winds 5 to 10 kt. Waves 1 ft or less. A chance of rain.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A
chance of rain.
.MON...SW winds 15 to 20 kt...becoming W 20 to 25 kt in the
afternoon. Gusts up to 30 kt. Waves 3 ft. Rain.
.MON NIGHT...W winds 20 to 25 kt with gusts to 35 kt. Waves 3 ft.
.TUE...W winds 20 to 25 kt. Waves 2 to 3 ft.
.WED...W winds 10 to 15 kt. Waves 1 to 2 ft.

$$

ANZ533-270900-
Chesapeake Bay from North Beach to Drum Point-
657 PM EST Fri Dec 26 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EST SATURDAY THROUGH
SATURDAY AFTERNOON...

.TONIGHT...S winds 15 kt...becoming SW after midnight, then becoming
NW late. Waves 1 to 2 ft. Rain with a chance of drizzle this
evening, then a slight chance of very light drizzle after midnight.
Vsby 1 to 3 NM this evening.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft.
.SAT NIGHT...NE winds 10 to 15 kt...diminishing to 5 kt after
midnight. Waves 1 to 2 ft.
.SUN...SE winds 5 kt...becoming S 10 to 15 kt in the afternoon.
Waves flat...building to 2 ft in the afternoon.
.SUN NIGHT...S winds 20 to 25 kt. Waves 3 ft. A chance of rain.
.MON...SW winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. Rain
likely.
.MON NIGHT...W winds 25 to 30 kt. Waves 4 ft.
.TUE...W winds 25 to 30 kt...diminishing to 15 to 20 kt after
midnight. Waves 4 ft...subsiding to 2 ft after midnight.
.WED...W winds 10 to 15 kt. Waves 2 ft.

$$

ANZ541-270900-
Choptank River to Cambridge MD and the Little Choptank River-
657 PM EST Fri Dec 26 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EST SATURDAY THROUGH
SATURDAY AFTERNOON...

.TONIGHT...S winds 10 to 15 kt...becoming NW late. Waves 1 ft. Rain
with a chance of drizzle this evening, then a slight chance of very
light drizzle after midnight. Vsby 1 to 3 NM this evening.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 1 ft or less.
.SUN...SE winds 5 to 10 kt. Waves 1 ft or less.
.SUN NIGHT...S winds 20 to 25 kt. Waves 2 to 3 ft. A chance of rain.
.MON...SW winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. Rain
likely.
.MON NIGHT...W winds 25 to 30 kt. Waves 4 ft.
.TUE...W winds 25 to 30 kt...diminishing to 15 to 20 kt after
midnight. Waves 3 ft...subsiding to 2 ft after midnight.
.WED...W winds 10 to 15 kt. Waves 2 ft.

$$

ANZ542-270900-
Patuxent River to Broomes Island MD-
657 PM EST Fri Dec 26 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY AFTERNOON...

.TONIGHT...S winds 10 kt...becoming NW late. Waves 1 ft. Rain with a
chance of drizzle this evening, then a slight chance of very light
drizzle after midnight.
.SAT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.SUN...SE winds 5 to 10 kt. Waves 1 ft.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. A
chance of rain.
.MON...SW winds 15 to 20 kt with gusts to 30 kt. Waves 1 ft. Rain
likely.
.MON NIGHT...W winds 15 to 20 kt with gusts to 30 kt. Waves 1 ft.
.TUE...W winds 15 to 20 kt...diminishing to 10 kt after midnight.
Waves 1 ft.
.WED...W winds 10 to 15 kt. Waves 1 ft.

$$

ANZ534-270900-
Chesapeake Bay from Drum Point to Smith Point-
657 PM EST Fri Dec 26 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EST SATURDAY THROUGH
SATURDAY AFTERNOON...

.TONIGHT...S winds 10 to 15 kt...becoming NW late. Waves 1 to 2 ft.
Rain likely this evening with vsby 1 to 3 NM.
.SAT...N winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.SAT NIGHT...NE winds 10 to 15 kt with gusts to 20 kt...diminishing
to 5 kt after midnight. Waves 1 to 2 ft.
.SUN...E winds 5 kt...becoming S 10 to 15 kt in the afternoon. Waves
1 ft or less.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
.MON...SW winds 20 to 25 kt with gusts to 30 kt. Waves 4 ft. Rain
likely.
.MON NIGHT...W winds 25 to 30 kt. Waves 5 ft.
.TUE...W winds 20 to 25 kt. Waves 4 ft...subsiding to 3 ft.
.WED...W winds 15 to 20 kt. Waves 2 ft.

$$

ANZ543-270900-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
657 PM EST Fri Dec 26 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EST SATURDAY THROUGH
SATURDAY AFTERNOON...

.TONIGHT...S winds 10 kt...becoming NW late. Waves 1 ft. Rain this
evening with vsby 1 to 3 NM.
.SAT...N winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.
.SAT NIGHT...NE winds 10 to 15 kt...diminishing to 5 kt after
midnight. Waves 1 ft.
.SUN...SE winds 5 to 10 kt. Waves 1 ft or less.
.SUN NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to
3 ft.
.MON...SW winds 20 to 25 kt with gusts to 30 kt. Waves 3 ft. Rain
likely.
.MON NIGHT...W winds 25 to 30 kt. Waves 3 ft.
.TUE...W winds 20 to 25 kt. Waves 2 to 3 ft.
.WED...W winds 15 to 20 kt. Waves 2 ft.

$$



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