National Data Buoy Center NWS Marine Forecast (2024)

FZUS51 KLWX 090409
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
Issued by National Weather Service Mount Holly NJ
1209 AM EDT Tue Jul 9 2024

Tidal Potomac River and Maryland portion of Chesapeake Bay.

Forecasts of wave heights do not include effects of wind directionrelative to tidal currents. Expect higher waves when winds areblowing against the tidal flow.

ANZ500-092015
1209 AM EDT Tue Jul 9 2024

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

A slow moving front will stall out in the vicinity of the watersthrough today and Wednesday. A cold front will approach the watersfrom the west Thursday before washing out later this week and intothe weekend. Daily afternoon showers and thunderstorms return to theforecast for most of the upcoming week. Small Craft Advisories havebeen issued for portions of the Chesapeake Bay beginning thisafternoon. SCA's may be required from Wednesday afternoon throughWednesday night and again during parts of Thursday.

ANZ535-092015
Tidal Potomac from Key Bridge to Indian Head
1209 AM EDT Tue Jul 9 2024

OVERNIGHT
S winds 5 kt. Waves less than 1 ft.

TUE
S winds 5 kt. Waves less than 1 ft.

TUE NIGHT
S winds 5 kt. Waves less than 1 ft.

WED
S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A chanceof showers and tstms.

WED NIGHT
S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. Achance of showers and tstms.

THU
S winds 5 to 10 kt. Waves 1 ft. Showers likely with a chanceof tstms.

THU NIGHT
S winds around 5 kt. Waves 1 ft. Showers and tstmslikely.

FRI
S winds around 5 kt. Waves 1 ft. A chance of tstms. Showers.

SAT
SW winds around 5 kt. Waves 1 ft or less. A chance of showersand tstms.

Winds and waves higher and visibilities lower in and near tstms.

ANZ536-092015
Tidal Potomac from Indian Head to Cobb Island
1209 AM EDT Tue Jul 9 2024

OVERNIGHT
S winds 5 kt. Waves less than 1 ft.

TUE
S winds around 5 kt. Waves 1 ft.

TUE NIGHT
S winds 5 kt. Waves less than 1 ft.

WED
S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A chanceof showers and tstms.

WED NIGHT
S winds 10 to 15 kt. Waves 1 ft. A chance of showersand tstms.

THU
S winds 5 to 10 kt. Waves 1 ft. Showers likely with a chanceof tstms.

THU NIGHT
S winds 5 kt. Waves less than 1 ft. Showers and tstmslikely.

FRI
S winds 5 kt. Waves less than 1 ft. A chance of tstms.Showers.

SAT
SW winds around 5 kt. Waves 1 ft. A chance of showers andtstms.

Winds and waves higher and visibilities lower in and near tstms.

ANZ537-092015
Tidal Potomac from Cobb Island to Smith Point
1209 AM EDT Tue Jul 9 2024

SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATETONIGHT

OVERNIGHT
S winds 5 kt. Waves less than 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft.

TUE NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED
S winds 5 to 10 kt...increasing to 15 to 20 kt with gusts to25 kt in the afternoon. Waves 1 ft... building to 3 ft in theafternoon.

WED NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to3 ft. A chance of showers and tstms.

THU
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showerslikely with a chance of tstms.

THU NIGHT
S winds 5 to 10 kt. Waves 1 to 2 ft. Showers and tstmslikely.

FRI
S winds 5 to 10 kt. Waves 1 ft. Tstms likely through the day.Showers. A chance of tstms through the night.

SAT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers in themorning. A chance of tstms. Showers likely through the night.

Winds and waves higher and visibilities lower in and near tstms.

ANZ530-092015
Chesapeake Bay north of Pooles Island
1209 AM EDT Tue Jul 9 2024

OVERNIGHT
S winds 5 kt. Waves flat.

See Also
National Data Buoy Center NWS Marine ForecastNational Data Buoy Center NWS Marine ForecastNational Data Buoy Center NWS Marine Forecast

TUE
S winds 5 to 10 kt. Waves 1 ft or less.

TUE NIGHT
S winds 5 to 10 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Gusts up to 25 kt in the afternoon.Waves 1 ft. A chance of showers and tstms.

WED NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. Achance of showers and tstms.

THU
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. Showerslikely with a chance of tstms.

THU NIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers and tstmslikely.

FRI
S winds 5 to 10 kt. Waves 1 ft. Showers likely with a chanceof tstms in the morning, then showers with tstms likely.

SAT
SW winds 5 to 10 kt. Waves 1 ft or less. A chance of showersin the morning. A chance of tstms. Showers likely through the night.

Winds and waves higher and visibilities lower in and near tstms.

ANZ531-092015
Chesapeake Bay from Pooles Island to Sandy Point
1209 AM EDT Tue Jul 9 2024

SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATETONIGHT

OVERNIGHT
S winds 10 kt. Waves 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft.

TUE NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

WED
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. A chanceof showers and tstms.

WED NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. Achance of showers and tstms.

THU
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.Showers likely with a chance of tstms.

THU NIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers and tstmslikely.

FRI
S winds 5 to 10 kt. Waves 1 ft. Showers with a chance oftstms through the day, then showers with tstms likely through thenight.

SAT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers in themorning. A chance of tstms. Showers likely through the night.

Winds and waves higher and visibilities lower in and near tstms.

ANZ538-092015
Patapsco River including Baltimore Harbor
1209 AM EDT Tue Jul 9 2024

OVERNIGHT
S winds 5 kt. Waves flat.

TUE
S winds 5 to 10 kt. Waves 1 ft or less.

TUE NIGHT
S winds 5 to 10 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Gusts up to 25 kt in the afternoon.Waves 1 to 2 ft. A chance of showers and tstms.

WED NIGHT
S winds 10 to 15 kt with gusts to 25 kt. Waves 1 to2 ft. A chance of showers and tstms.

THU
S winds 5 to 10 kt. Waves 1 ft. Showers likely with a chanceof tstms.

THU NIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers and tstmslikely.

FRI
S winds 5 to 10 kt. Waves 1 ft or less. A chance of tstms.Showers.

SAT
SW winds 5 kt. Waves less than 1 ft. A chance of showers inthe morning. A chance of tstms. Showers likely through the night.

Winds and waves higher and visibilities lower in and near tstms.

ANZ539-092015
Chester River to Queenstown MD
1209 AM EDT Tue Jul 9 2024

SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATETONIGHT

OVERNIGHT
S winds 5 kt. Waves less than 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft.

TUE NIGHT
S winds 10 kt with gusts to 20 kt. Waves 1 ft.

WED
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. Achance of showers and tstms.

WED NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. Achance of showers and tstms.

THU
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.Showers likely with a chance of tstms.

THU NIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers and tstmslikely.

FRI
S winds 5 to 10 kt. Waves 1 ft. Showers with a chance oftstms through the day, then showers with tstms likely through thenight.

SAT
SW winds 5 kt. Waves less than 1 ft. A chance of showers inthe morning. A chance of tstms. Showers likely through the night.

Winds and waves higher and visibilities lower in and near tstms.

ANZ532-092015
Chesapeake Bay from Sandy Point to North Beach
1209 AM EDT Tue Jul 9 2024

SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATETONIGHT

OVERNIGHT
S winds 10 kt. Waves 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 to 2 ft.

TUE NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. Achance of showers.

WED NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. Achance of showers and tstms.

THU
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. Showerslikely with a chance of tstms.

THU NIGHT
S winds 5 to 10 kt. Waves 2 ft. Showers and tstmslikely.

FRI
S winds 5 to 10 kt. Waves 1 ft. A chance of tstms. Showers.

SAT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers in themorning. A chance of tstms. Showers likely through the night.

Winds and waves higher and visibilities lower in and near tstms.

ANZ540-092015
Eastern Bay
1209 AM EDT Tue Jul 9 2024

SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATETONIGHT

OVERNIGHT
S winds 5 kt. Waves less than 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft.

TUE NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

WED
S winds 10 kt...increasing to 15 to 20 kt in the afternoon.Waves 1 to 2 ft. A chance of showers and tstms.

WED NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. Achance of showers and tstms.

THU
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.Showers likely with a chance of tstms.

THU NIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers and tstmslikely.

FRI
S winds 5 to 10 kt. Waves 1 ft. A chance of tstms. Showers.

SAT
SW winds 5 kt. Waves less than 1 ft. A chance of showers inthe morning. A chance of tstms. Showers likely through the night.

Winds and waves higher and visibilities lower in and near tstms.

ANZ533-092015
Chesapeake Bay from North Beach to Drum Point
1209 AM EDT Tue Jul 9 2024

SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATETONIGHT

OVERNIGHT
S winds 5 to 10 kt. Waves 1 ft.

TUE
S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.Waves 1 to 2 ft.

TUE NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. Achance of showers.

WED NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft. Achance of showers and tstms.

THU
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chanceof showers and tstms.

THU NIGHT
S winds 10 to 15 kt. Waves 2 ft. Showers and tstmslikely.

FRI
S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of tstms.Showers.

SAT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers in themorning. A chance of tstms. Showers likely through the night.

Winds and waves higher and visibilities lower in and near tstms.

ANZ541-092015
Choptank River to Cambridge MD and the Little Choptank River
1209 AM EDT Tue Jul 9 2024

SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATETONIGHT

OVERNIGHT
S winds 5 kt. Waves less than 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft.

TUE NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

WED
S winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. Achance of showers.

WED NIGHT
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft. Achance of showers and tstms.

THU
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.Showers likely with a chance of tstms.

THU NIGHT
S winds 10 kt. Waves 1 ft. Showers and tstms likely.

FRI
S winds 5 to 10 kt. Waves 1 ft. A chance of tstms. Showers.

SAT
SW winds 5 to 10 kt. Waves 1 ft. A chance of showers throughthe day. A chance of tstms.

Winds and waves higher and visibilities lower in and near tstms.

ANZ542-092015
Patuxent River to Broomes Island MD
1209 AM EDT Tue Jul 9 2024

SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATETONIGHT

OVERNIGHT
S winds 5 kt. Waves less than 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft.

TUE NIGHT
S winds 5 to 10 kt. Waves 1 ft.

WED
S winds 10 to 15 kt. Gusts up to 25 kt in the afternoon.Waves 1 ft. A chance of showers.

WED NIGHT
S winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft. Achance of showers and tstms.

THU
S winds 5 to 10 kt. Waves 1 ft. Showers likely with a chanceof tstms.

THU NIGHT
S winds 5 to 10 kt. Waves 1 ft. Showers and tstmslikely.

FRI
S winds 5 to 10 kt. Waves 1 ft. A chance of tstms. Showers.

SAT
SW winds 5 kt. Waves less than 1 ft. A chance of showers inthe morning. A chance of tstms. Showers likely through the night.

Winds and waves higher and visibilities lower in and near tstms.

ANZ534-092015
Chesapeake Bay from Drum Point to Smith Point
1209 AM EDT Tue Jul 9 2024

SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATETONIGHT

OVERNIGHT
S winds 5 to 10 kt. Waves 1 ft.

TUE
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.

TUE NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to3 ft.

WED
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft...building to 4 ft in the afternoon.

WED NIGHT
S winds 20 to 25 kt. Waves 4 ft. A chance of showersand tstms.

THU
S winds 15 to 20 kt. Waves 2 to 3 ft. Showers likely with achance of tstms.

THU NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.Showers and tstms likely.

FRI
S winds 10 to 15 kt. Waves 2 ft. Showers and tstms likely inthe morning, then showers with a chance of tstms.

SAT
SW winds 5 to 10 kt. Waves 1 ft. A chance of tstms. Showerslikely .

Winds and waves higher and visibilities lower in and near tstms.

ANZ543-092015
Tangier Sound and the inland waters surrounding Bloodsworth Island
1209 AM EDT Tue Jul 9 2024

SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATETONIGHT

OVERNIGHT
S winds 5 kt. Waves less than 1 ft.

TUE
S winds 5 to 10 kt. Waves 1 ft.

TUE NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to2 ft.

WED
S winds 15 to 20 kt with gusts to 25 kt. Waves 2 ft.

WED NIGHT
S winds 20 to 25 kt. Waves 3 ft. A chance of showersand tstms.

THU
S winds 15 to 20 kt. Waves 2 ft. A chance of showers andtstms.

THU NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.Showers likely with a chance of tstms.

FRI
S winds 10 to 15 kt. Waves 1 to 2 ft. Showers likely with achance of tstms.

SAT
SW winds 5 to 10 kt. Waves 1 ft. A chance of tstms. Showerslikely, mainly in the morning.

Winds and waves higher and visibilities lower in and near tstms.

National Data Buoy Center NWS Marine Forecast (2024)

FAQs

What is the National Data Buoy Center? ›

The National Data Buoy Center (NDBC) is a part of the National Oceanic and Atmospheric Administration's (NOAA) National Weather Service (NWS). NDBC designs, develops, operates, and maintains a network of data collecting buoys and coastal stations.

Read More ›
What is the best website for boating weather? ›

The National Weather Service (NWS) Marine Weather Services Program offers a broad range of marine forecast and warning products in graphical and text (low bandwidth) formats (See Tabs above).

Read The Full Story ›
How are NOAA buoys anchored? ›

Even the direction of wave propagation can be measured on many of NOAA's buoys. The buoys can face rough weather and are anchored using anything from chains in shallow waters to heavy-duty, polypropylene rope in deeper waters. The buoys are serviced every two years to try to keep up with corrosion.

View Details ›
What is the marine weather forecast for Surf City NJ? ›

Breezy S winds with moderate choppy seas. Very small short period waves. Winds: S 13 to 15 knots. Seas: SE 3 feet at 7 seconds.

Read The Full Story ›
Is data from NOAA free? ›

The NOAA datasets made available through NODD are free for all users to access with no use restrictions and do not require any registration to access.

View Details ›
How many buoys does NOAA have? ›

Caption: The weather buoy, shown here, is one of 103 weather buoys operated and maintained by NOAA's National Data Buoy Center.

Learn More ›
What is the most accurate marine weather app? ›

Best Offshore weather report and best offshore weather apps

Windy stands out for its detailed maps and global coverage, while NOAA Weather Radar offers accurate real-time radar imagery. The Weather Channel and AccuWeather are known for their precise forecasts and customizable alerts.

Show Me More ›
What wind speed is too high for boating? ›

Generally, wind gusts of 34 knots (39 mph) or more are often strong enough to capsize small boats, especially when they catch the boater off-guard.

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How rough is the sea today? ›

Sea State. Slight, occasionally moderate.

View Details ›
What are bowie's in the ocean used for? ›

Mooring buoys support sustainable use by preventing anchor damage on sensitive habitats especially coral formations, seagrass beds, and submerged archaeological resources, while facilitating public access for research, recreation, and tourism.

See Details ›

What is the problem with buoys? ›

Cracks – in addition to allowing for water ingress, cracks can be a sign that the material has aged and weakened, or that a buoy has been hit by a vessel. Once the structure is breached the deterioration of the buoy will naturally speed up. Rusting – for steel buoys rust is a common issue, particularly in saltwater.

Continue Reading ›
What is significant wave height in Noaa buoy? ›

Significant Wave Height is the average height (meters) of the highest one-third of the waves during a 20 minute sampling period. Swell height is the vertical distance (meters) between any swell crest and the succeeding swell wave trough.

View More ›
How big are the waves today in New Jersey? ›

Forecast Details
SURFSWELL
6am2-3 ft fair3.6ft 6s SSE
12pm2+ ft fair3.2ft 6s SSE
6pm2 ft choppy2.8ft 6s SSE

Explore More ›
What is the marine forecast for Bay Head New Jersey? ›

S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt late. Seas 3 to 4 ft. Wave Detail: S 4 ft at 6 seconds. A slight chance of showers and tstms.

Keep Reading ›
What is the perfect weather for surfing? ›

Surfing is usually best when it's wind-free. A surfer values glassy conditions―a calm surface of the water without gusts of wind―the most, but tough surfers learn to manage even the worst conditions. In surfing, there are two primary wind conditions: onshore and offshore.

Learn More ›
What kind of data does NOAA collect? ›

NOAA satellites observe the Earth from space, constantly scanning the planet to collect the most up-to-date data about the atmosphere, land, and oceans. This information is vital to our daily lives—and is in fact the basis for every weather forecast.

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How many locations does NOAA have? ›

This is done through a collection of national and regional centers, 13 river forecast centers (RFCs), and more than 120 local weather forecast offices (WFOs).

Get More Info Here ›
What is NOAA data used for? ›

We monitor a number of environmental conditions daily, weekly, seasonally, and over years to understand conditions on our planet and changes to our climate. We provide authoritative assessments of the U.S. and global climate. We also maintain one of the most significant archives of environmental data on Earth.

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What is NOAA reception? ›

By nature and design, NOAA Weather Radio (NWR) coverage is limited to an area within about 40 miles of the transmitter site. The quality of what is heard will vary due to distance from the transmitter, local terrain, weather conditions, and the quality and location of the receiver.

Learn More ›

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