Data and Tools


View graphs of real-time magnetic data from USGS and partner observatories and download historical definitive data.

Filter Total Items: 4
Date published: July 25, 2018

Other Sources of Data

Non-USGS cooperators and partners, as well as others with geomagnetism data.

Date published: July 21, 2018

Declination of the Earth 1590–1990

Animations showing the changes in the Earth's magnetic field.

Date published: July 19, 2018

Disturbance Storm Time (Dst) Display

Dst data from USGS observatories as well as other world partners.

Date published: April 27, 2016

Real-Time HEZF Display

Real-time HEZF index display from USGS geomagnetic observatories internet feeds without filling gaps with satellite data