NESDIS will stop providing the High Definition Geomagnetic Model and High Definition Geomagnetic Model-Real Time no earlier than September 25, 2026. After that date, the 2026 models and all subsequent models will be available through Monarch Magnetics, a private commercial entity. See the NESDIS Notice of Changes website for additional details and contact information.
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.
The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.