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 Aurora over the North of Scotland

Release of WMM 2025

Release of 14th IGRF

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Release of World Magnetic Model (WMM) 2025

BGS and NOAA-NCEI release new World Magnetic Model - High Resolution for 2025 to 2030.

Release of IGRF-14

Release of 14th generation International Geomagnetic Reference Field, covering for 1900 to 2030 led by BGS.

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When we predict an increase in magnetic activity we send out a geomagnetic disturbance alert.
Notice of a potential magnetic storm increases your chance of seeing the Northern Lights!
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About BGS Geomagnetism

The Geomagnetism team measures, records, models and interprets variations in the Earth’s natural magnetic fields.

Our data and expertise help to develop scientific understanding of change in the Earth and the environment, from deep within the core out into space.

We also provide geomagnetic products and services to industry and to academic colleagues and we use our knowledge for information and education.

Video introduction

Research

Modelling the Earth's magnetic field, space weather hazards.

Operations

About our magnetic observatory operations, UK surveying, equipment.

Data and Services

Observatory data, indices, models, charts, applications.

Education

Overviews of the Earth's magnetic field, reversals, magnetic poles.

Global activity now!

Find out what the current global geomagnetic activity level is.