National Data Buoy Center NWS Marine Forecast (2024)

FZUS51 KLWX 202334
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
734 PM EDT Tue Aug 20 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.

ANZ500-210800
734 PM EDT Tue Aug 20 2024

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

Broad high pressure returns to the waters today through Saturday.

ANZ535-210800
Tidal Potomac from Key Bridge to Indian Head
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM EDT THIS EVENING

SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGHWEDNESDAY AFTERNOON

TONIGHT
N winds 5 to 10 kt. Gusts up to 20 kt this evening. Waves1 ft.

WED
NW winds 5 to 10 kt. Gusts up to 20 kt in the late morningand afternoon. Waves 1 ft.

WED NIGHT
NW winds 5 to 10 kt. Waves 1 ft.

THU
NW winds 5 kt. Waves less than 1 ft.

THU NIGHT
N winds 5 kt. Waves less than 1 ft.

FRI
SW winds around 5 kt. Waves 1 ft.

FRI NIGHT
S winds around 5 kt. Waves 1 ft.

SAT
S winds around 5 kt. Waves 1 ft.

SUN
S winds around 5 kt. Waves 1 ft.

ANZ536-210800
Tidal Potomac from Indian Head to Cobb Island
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM EDT THIS EVENING

TONIGHT
N winds 10 kt with gusts to 20 kt. Waves 1 ft.

WED
NW winds 5 to 10 kt. Waves 1 ft.

WED NIGHT
NW winds around 5 kt. Waves 1 ft.

THU
N winds 5 kt. Waves less than 1 ft.

THU NIGHT
SE winds 5 kt. Waves less than 1 ft.

FRI
SW winds around 5 kt. Waves 1 ft.

FRI NIGHT
S winds around 5 kt. Waves 1 ft.

SAT
S winds around 5 kt. Waves 1 ft.

SUN
S winds around 5 kt. Waves 1 ft.

ANZ537-210800
Tidal Potomac from Cobb Island to Smith Point
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
NW winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
S winds 5 kt. Waves flat.

FRI
SW winds around 5 kt. Waves 1 ft or less.

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

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

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

ANZ530-210800
Chesapeake Bay north of Pooles Island
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.

WED
NW winds 10 kt with gusts to 20 kt. Waves 1 ft.

WED NIGHT
NW winds 5 to 10 kt. Waves 1 ft.

THU
NW winds 5 kt. Waves flat.

THU NIGHT
NW winds 5 kt. Waves flat.

FRI
W winds around 5 kt. Waves flat.

FRI NIGHT
S winds around 5 kt. Waves flat.

SAT
SW winds 5 to 10 kt. Waves 1 ft or less.

SUN
SW winds 5 kt. Waves flat.

ANZ531-210800
Chesapeake Bay from Pooles Island to Sandy Point
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
N winds 15 kt with gusts to 20 kt. Waves 2 to 3 ft.

WED
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 to 2 ft.

THU
NW winds 5 kt. Waves less than 1 ft.

THU NIGHT
E winds 5 kt. Waves flat.

FRI
E winds around 5 kt. Waves 1 ft or less.

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

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

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

ANZ538-210800
Patapsco River including Baltimore Harbor
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
NW winds 10 kt with gusts to 20 kt. Waves 1 ft.

WED
NW winds 10 kt with gusts to 20 kt. Waves 1 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft or less.

THU
NW winds 5 kt. Waves flat.

THU NIGHT
NE winds 5 kt. Waves flat.

FRI
E winds around 5 kt. Waves flat.

FRI NIGHT
S winds around 5 kt. Waves flat.

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

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

ANZ539-210800
Chester River to Queenstown MD
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
N winds 15 kt with gusts to 20 kt. Waves 2 ft.

WED
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 to 2 ft.

THU
NW winds 5 kt. Waves less than 1 ft.

THU NIGHT
SE winds 5 kt. Waves flat.

FRI
SE winds around 5 kt. Waves flat.

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

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

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

ANZ532-210800
Chesapeake Bay from Sandy Point to North Beach
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
N winds 15 kt with gusts to 25 kt. Waves 2 to 3 ft.

WED
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 kt. Waves less than 1 ft.

THU NIGHT
SE winds 5 kt. Waves flat.

FRI
E winds around 5 kt. Waves 1 ft or less.

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

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

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

ANZ540-210800
Eastern Bay
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
N winds 15 kt with gusts to 20 kt. Waves 2 ft.

WED
NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 kt. Waves less than 1 ft.

THU NIGHT
SE winds 5 kt. Waves flat.

FRI
SE winds around 5 kt. Waves flat.

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

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

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

ANZ533-210800
Chesapeake Bay from North Beach to Drum Point
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
N winds 15 kt with gusts to 25 kt. Waves 3 ft.

WED
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
NE winds 5 kt. Waves less than 1 ft.

THU NIGHT
SE winds 5 kt. Waves flat.

FRI
SW winds 5 kt. Waves less than 1 ft.

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

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

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

ANZ541-210800
Choptank River to Cambridge MD and the Little Choptank River
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
N winds 15 kt with gusts to 20 kt. Waves 2 ft.

WED
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 kt. Waves less than 1 ft.

THU NIGHT
SE winds 5 kt. Waves flat.

FRI
SE winds around 5 kt. Waves flat.

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

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

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

ANZ542-210800
Patuxent River to Broomes Island MD
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
N winds 10 kt with gusts to 20 kt. Waves 1 ft.

WED
NW winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.

WED NIGHT
NW winds 5 to 10 kt. Waves 1 ft.

THU
NE winds 5 kt. Waves less than 1 ft.

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

FRI
S winds around 5 kt. Waves 1 ft.

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

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

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

ANZ534-210800
Chesapeake Bay from Drum Point to Smith Point
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
N winds 15 kt with gusts to 20 kt. Waves 3 ft.

WED
NW winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
S winds 5 kt. Waves flat.

FRI
NE winds 5 kt. Waves less than 1 ft.

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

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

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

ANZ543-210800
Tangier Sound and the inland waters surrounding Bloodsworth Island
734 PM EDT Tue Aug 20 2024

SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON

TONIGHT
N winds 15 kt with gusts to 20 kt. Waves 2 ft.

WED
NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.

WED NIGHT
N winds 5 to 10 kt. Waves 1 ft.

THU
N winds 5 to 10 kt. Waves 1 ft.

THU NIGHT
E winds 5 kt. Waves flat.

FRI
E winds 5 kt. Waves less than 1 ft.

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

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

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

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.

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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.

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Where is buoy 44009? ›

Station 44009 (LLNR 168) - DELAWARE BAY 26 NM Southeast of Cape May, NJ.

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How do buoys work? ›

Wave buoys measure the movement of the water surface as a wave train. The data they transmit is analysed to form statistics like significant wave height and period, and wave direction. Weather buoys measure weather parameters such as air temperature, barometric pressure, and wind speed and direction.

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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.

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Do buoys have cameras? ›

Our larger buoy platforms support either surface or underwater cameras that capture images every 10-15 minutes and the latest available images can be viewed below. Data from these buoys can be viewed on GLOS's new cloud-based platform page, Seagull.

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What is the lifespan of a buoy? ›

Lifespan of buoys can be estimated more than 20 years. Service and Maintenance: UV-stabilized polyethylene limits marine growth and enables an easy and fast cleaning “on board”. Large intervals between servicing result in major costs savings.

How do noaa buoys stay in place? ›

In order for the buoys (and your boat) to stay in one place, a complicated and robust anchor system lies below. There are three types of anchors commonly used in the Florida Keys to secure the buoys to the seafloor: pin anchors, u-bolt anchors, and Manta Ray® anchors.

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Are buoys chained down? ›

Weather buoys range in diameter from 1.5–12 metres (5–40 ft). Those that are placed in shallow waters are smaller in size and moored using only chains, while those in deeper waters use a combination of chains, nylon, and buoyant polypropylene.

How far are buoys from shore? ›

Controlled Area Buoy

A baseline slow/minimum wake areas of at least 150 feet for general watercraft and 300 feet for Personal Watercraft performing repetitive passes. These minimum distances are from shorelines, docks, swim areas, and anchored watercraft.

Where is buoy 51001? ›

Station 51001 (LLNR 28006) - NORTHWESTERN HAWAII ONE - 188 NM NW of Kauai Island, HI.

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Where is buoy 44098? ›

Station 44098 - Jeffrey's Ledge, NH (160)

What side of the buoys do you go on? ›

The expression “red right returning” has long been used by seafarers as a reminder that the red buoys are kept to the starboard (right) side when proceeding from the open sea into port (upstream). Likewise, green buoys are kept to the port (left) side (see chart below).

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Is it illegal to climb on buoys? ›

Interfering with a buoy is illegal and could result in the Coast Guard responding to a non-distress situation when there may be other people on the water in need of actual assistance. The fine for climbing on a federal navigational buoy is $500.

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How accurate are buoys? ›

In some cases, buoys can produce erroneous directional information. Because buoys measure the wave field at one physical location, they do not have enough information to accurately measure wave direction and spreading under many circ*mstances.

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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? ›

The NMFS operates twelve headquarters offices, five regional offices, six fisheries science centers, and more than 20 laboratories throughout the United States and U.S. territories, which are the sites of research and management of marine resources.

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What is NOAA reception? ›

The NOAA/NESDIS High Rate Information Transmission / Emergency Managers Weather Information Network (HRIT/EMWIN) broadcast can be received using a VSAT system with the basic components of a VSAT antenna, low-noise block-down converter (LNB), satellite signal receiver, software to de-encapsulate the broadcast stream and ...

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What is NOAA ports? ›

Physical Oceanographic Real-Time System (PORTS^®)

PORTS® collects and disseminates observations of water levels, currents, salinity, bridge air gap and meteorological parameters (e.g., winds, atmospheric pressure, air and water temperatures) that mariners need to navigate safely.

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