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    • Regional Hydrodynamic Model Outputs of the NOAA Chesapeake Bay Operational Forecast System (CBOFS)

    Metadata Updated: December 12, 2025

    Oceanographic nowcasts and forecast guidance are scientific predictions about the present and future states of a water body (generally including water levels, currents, water temperature and salinity). These predictions rely on either observed data or forecasts from large-scale numerical models. A nowcast incorporates recent (and often near real-time) observed meteorological, oceanographic, and/or river flow rate data and/or analyzed (e.g. gridded) meteorological and oceanographic products. The wind data used to run CBOFS are based on the National Weather Service (NWS)/Real Time Mesoscale Analysis (RTMA) winds (for the nowcast) and an interpolation of the NWS North American Mesoscale (NAM)-12 atmospheric forecast model data (for the forecast). The NWS Global Forecasting System winds serve as backup winds for both the nowcast and forecast runs. 

          CBOFS runs on NOAA's High Performance Computers (HPC) in a new Coastal Ocean Modeling Framework (COMF) developed by CO-OPS. All CO-OPS official real-time products, including nowcast and forecast guidance from CBOFS are monitored by the CO-OPS's Continuous Operational Real-Time Monitoring System (CORMS). CORMS provides 24 hour per day, 7 days per week monitoring and quality control of sensors and data in order to ensure the availability, accuracy, and quality of tide, water level, current, and other marine environmental information. CORMS is intended to identify invalid and erroneous data and information before application of the data by real-time and near real-time users.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date August 25, 2025
    Metadata Created Date December 12, 2025
    Metadata Updated Date December 12, 2025
    Reference Date(s) 2017 (publication)
    Frequency Of Update daily

    Metadata Source

    Harvested from ncdc

    Other Data Resources

    Graphic Preview

    CBOFS model domain and grid map (source: NOAA/NOS)

    Additional Metadata

    Resource Type Dataset
    Metadata Date August 25, 2025
    Metadata Created Date December 12, 2025
    Metadata Updated Date December 12, 2025
    Reference Date(s) 2017 (publication)
    Responsible Party DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
    Contact Email
    Guid gov.noaa.ncdc:C01340
    Access Constraints Cite as: NOAA National Ocean Service; NOAA National Weather Service; NOAA Office of Oceanic and Atmospheric Research (2017): Regional Hydrodynamic Model Outputs of the NOAA Chesapeake Bay Operational Forecast System (CBOFS). [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/fztr-mf31. Accessed [date]., Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Disclaimers - Center for Operational Oceanographic Products and Services (CO-OPS): https://tidesandcurrents.noaa.gov/disclaimers.html
    Bbox East Long -74.5
    Bbox North Lat 39.7
    Bbox South Lat 36.0
    Bbox West Long -77.5
    Coupled Resource
    Frequency Of Update daily
    Graphic Preview Description CBOFS model domain and grid map (source: NOAA/NOS)
    Graphic Preview File https://data.noaa.gov/docucomp/image/79d27a29-bcff-4edb-af3c-7fc89da0cbb6
    Graphic Preview Type PNG
    Harvest Object Id 6ea69427-9cae-4197-8718-8b826ed30266
    Harvest Source Id 2cb3ef77-1683-4c2a-9119-dc65e50917c6
    Harvest Source Title ncdc
    Licence
    Lineage The model was produced by the NOAA Center for Operational Oceanographic Products and Services and is archived by the NOAA National Centers for Environmental Information.
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-77.5, 36.0], [-74.5, 36.0], [-74.5, 39.7], [-77.5, 39.7], [-77.5, 36.0]]]}
    Progress
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2015-12-31

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