NAVAREA IV - 1282/24(GEN)

Archived

Issued: 15 Oct 2024, 00:00Archived: 1 Jan 2025, 00:15Last modified: 29 Oct 2026, 19:20

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WORLD MAGENETIC MODEL (WMM) 2025 UPDATE 1. AS PART OF THE REGULAR UPDATE CYCLE OF THE WORLD MAGNETIC MODEL (WMM), THE NATIONAL OCEANOGRAPHIC & ATMOSPHERIC ADMINISTRATION (NOAA)/ NATIONAL CENTERS FOR ENVIRONMENTAL INFORMATION (NCEI), IN COLLABORATION WITH THE BRITISH GEOLOGICAL SURVEY (BGS), WILL RELEASE THE WMM2025 ON DECEMBER 17, 2024. THE CURRENT 2020 WMM WILL EXPIRE ON DECEMBER 31, 2024. 2. IN ORDER TO AVOID ANY MODEL PERFORMANCE DEGRADATION, USERS ARE RECOMMENDED TO DOWNLOAD AND INSTALL THE WMM2025 MODEL COEFFICIENTS, WHICH WILL BE PUBLISHED ONLINE AT HTTPS://WWW.NCEI.NOAA.GOV/PRODUCTS/ WORLD-MAGNETIC-MODEL. 3. THE WMM IS THE STANDARD MODEL USED BY THE U.S. DEPARTMENT OF DEFENSE (DOD), CIVIL AGENCIES, THE NORTH ATLANTIC TREATY ORGANIZATION (NATO), AND THE INTERNATIONAL HYDROGRAPHIC ORGANIZATION, FOR A WIDE-RANGE OF POSITIONING AND NAVIGATION SYSEM APPLICATIONS THAT USE THE GEOMAGNETIC FIELD, INCLUDING ALL AIRCRAFT, SHIPS, SUBMARINES, AND GPS UNITS. 4. CANCEL THIS MSG 010001Z JAN 25.

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