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.

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.

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How many buoys does NOAA have? ›

The network includes moored ocean buoys, fixed coastal stations and mobile observing platforms. NOAA's 200 moored buoys operate in a harsh environment, subjected to powerful ocean currents, fluctuating strong winds, surging waves, sea salt, the sun's ultraviolet rays, cold temperatures and even vandalism.

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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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How accurate are marine forecasts? ›

Weather forecasting is not a perfect science and conditions can change rapidly and unexpectedly. Always make certain you have the latest forecast and be aware of weather warnings via various dissemination methods. Most marine forecasts are updated every six hours and as conditions warrant.

What is the National data Center? ›

It is the mission of the NDC to furnish national Chapter 13 case information to parties-in-interest (and other appropriate persons) via a single, secured Internet site while protecting the legitimate privacy interest of debtors.

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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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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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What are the 5 oceans of NOAA? ›

The United States recognizes five named ocean basins: Arctic, Atlantic, Indian, Pacific, and Southern. The ocean and large inland lakes play an integral role in many of the Earth's systems, including climate and weather.

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How deep can buoys go? ›

Tropical Moored Buoys

It is deployed in depths of up to 6000 meters. Measurements from the mooring include surface variables, as well as subsurface temperatures down to a depth of 500 meters.

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.

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How long does a buoy last? ›

A: Buoys are made of durable materials and can be expected to last 4-10 years. Sensors and probes may require more frequent replacement (2-3 years) than the buoy platform.

What is significant wave height in Noaa buoy? ›

Significant wave height (meters) is calculated as the average of the highest one-third of all of the wave heights during the 20-minute sampling period. See the Wave Measurements section. Dominant wave period (seconds) is the period with the maximum wave energy.

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What is the best marine forecast model? ›

and oceanic (wave height, wave period, etc.) forecasts. This is currently the highest spatial resolution among available global models, and ECMWF is considered the most effective model. It offers good results for both weather forecasting and sea forecasting.

What is the best marine weather site? ›

Top Marine Weather Websites. NOAA Marine Weather – The National Oceanic and Atmospheric Administration (NOAA) Marine Weather tells the daily weather, storm warnings, and climate monitoring. You can also view wind and wave charts.

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What is NOAA's forecasting accuracy rate? ›

A seven-day forecast can accurately predict the weather about 80 percent of the time and a five-day forecast can accurately predict the weather approximately 90 percent of the time. However, a 10-day—or longer—forecast is only right about half the time.

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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Where is the National climate data Center? ›

NOAA's National Climatic Data Center (NCDC), located in Asheville, North Carolina, maintains the world's largest climate data archive and provides climatological services and data to every sector of the United States economy and to users worldwide.

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What is NOAA site? ›

The mission of the National Oceanic and Atmospheric Administration (NOAA) is to provide daily weather forecasts, severe storm warnings, climate monitoring to fisheries management, coastal restoration, and the supporting of marine commerce.

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National Data Buoy Center NWS Marine Forecast (2024)

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References