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World Magnetic Model 2015

GeoSocial Aurora

Geomagnetism Review 2013

Automatic detection of ionospheric Alfvén resonances

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World Magnetic Model 2015 released!

The latest revision of the World Magnetic Model has been released. This five-year model valid until 2020. This was created jointly by BGS and NOAA.

Read more about the World Magnetic Model here.

GeoSocial Aurora - share your aurora sightings!

Share your aurora sightings with us through a new mapping tool GeoSocial - Aurora!

Tweet your geo-located sightings and see them displayed on the map for others to see!

Read more about how GeoSocial may help aurora prediction.

Geomagnetism Review 2013

Read our review of the Geomagnetism Team's activities in 2013.

Automatic detection of ionospheric Alfvén resonances

A new paper published on automatic detection of ionospheric Alfvén resonances.

Read more about BGS's work with high-frequency magnetomers.

Sign-up for geomagnetic disturbance alerts

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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Latest News

  • Poster - Extremes in worldwide geomagnetic activity (2014)
  • Press Release - Course correction for the world's smartphones
  • GeoSocial Aurora - a new aurora sighting mapping tool
  • Paper - Automatic detection of ionospheric Alfvén resonances using signal and image processing techniques (2014)
  • Poster - Forecasting secular variation from CHAMP to Swarm (2014)
  • Poster - Validation of Swarm satellite magnetic data using observatory measurements (2014)

  • 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.


    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.