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All the Norths

Virtual Talk

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The Great North Run

The directions of true, grid and magnetic north will, for the first time, coincide at various locations in Great Britain between 2022 and 2026.

Virtual talk: Geomagnetism at BGS

Geophysicist Dr Ciaran Beggan tells us all about geomagnetism at the British Geological Survey - why, how and where we study it.

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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


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


About our magnetic observatory operations, UK surveying, equipment.

Data and Services

Observatory data, indices, models, charts, applications.


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

Global activity now!

Find out what the current global geomagnetic activity level is.