Data and Tools
RTD - Geomagnetism
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Geomagnetism
View graphs of real-time magnetic data from USGS and partner observatories and download historical definitive data.
Date published: July 25, 2018
Other Sources of Data
Non-USGS cooperators and partners, as well as others with geomagnetism data.
Attribution: Natural Hazards, Geomagnetism Program
Date published: July 21, 2018
Declination of the Earth 1590–1990
Animations showing the changes in the Earth's magnetic field.
Attribution: Natural Hazards, Geomagnetism Program
Date published: July 19, 2018
Disturbance Storm Time (Dst) Display
Dst data from USGS observatories as well as other world partners.
Attribution: Natural Hazards, Geomagnetism Program
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