As part of the regular update cycle of the World Magnetic Model, NCEI has released the WMM2020 in collaboration with the British Geological Survey.

Our High Definition Geomagnetic Model (HDGM) provides a clearer picture of Earth’s magnetic field.

Due to changes in Earth’s magnetic field, NCEI has released an out-of-cycle World Magnetic Model to ensure safe navigation.

Earth’s shifting magnetic field affects airports and airline operations, including runway names. NCEI’s World Magnetic Model is a guide.

Our scientists have produced the World Magnetic Model and the Enhanced Magnetic Model to help improve magnetic navigation.

You can help us improve the accuracy of magnetic navigation by tracking changes in Earth’s magnetic field with the CrowdMag app.