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    • World Magnetic Model 2025

    Metadata Updated: February 7, 2025

    The World Magnetic Model is the standard model used by the U.S. Department of Defense, the U.K. Ministry of Defence, the North Atlantic Treaty Organization (NATO) and the International Hydrographic Organization (IHO), for navigation, attitude and heading referencing systems using the geomagnetic field. It is also used widely in civilian navigation and heading systems. The model is produced at 5-year intervals, with the current model expiring on December 31, 2029. The current model WMM2025 is produced jointly by the NCEI and the British Geological Survey (BGS). The model, associated software, and documentation are distributed by NCEI on behalf of US National Geospatial-Intelligence Agency and by BGS on behalf of UK Defence Geographic Centre.

    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 December 17, 2024
    Metadata Created Date February 7, 2025
    Metadata Updated Date February 7, 2025
    Reference Date(s) December 17, 2024 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NGDC MGG Geophysical Models

    Other Data Resources

    Graphic Preview

    Declination contour map in miller projection

    Additional Metadata

    Resource Type Model
    Metadata Date December 17, 2024
    Metadata Created Date February 7, 2025
    Metadata Updated Date February 7, 2025
    Reference Date(s) December 17, 2024 (publication)
    Responsible Party (Point of Contact); NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ngdc:WMM2025
    Access Constraints 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., Cite as: NOAA NCEI Geomagnetic Modeling Team; British Geological Survey. 2024: World Magnetic Model 2025. NOAA National Centers for Environmental Information. https://doi.org/10.25921/aqfd-sd83. Accessed [date].
    Bbox East Long 180
    Bbox North Lat 90
    Bbox South Lat -90
    Bbox West Long -180
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Declination contour map in miller projection
    Graphic Preview File https://www.ngdc.noaa.gov/geomag/WMM/icons/WMM2025/WMM2025_D_BoZ_MILL.png
    Graphic Preview Type PNG
    Harvest Object Id 296a0bb4-01e2-4d3a-aa0f-303f0c39b069
    Harvest Source Id 5ed471dc-74d7-4fff-9550-9d3d373a7a15
    Harvest Source Title NGDC MGG Geophysical Models
    Licence Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
    Lineage
    Metadata Language
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System urn:ogc:def:crs:EPSG::4326
    Spatial Harvester True
    Temporal Extent Begin 2025-01-01
    Temporal Extent End 2029-12-31

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