Data and Tools
RTD - Geomagnetism
Geomagnetism
View graphs of real-time magnetic data from USGS and partner observatories and download historical definitive data.
Other Sources of Data
Non-USGS cooperators and partners, as well as others with geomagnetism data.
Declination of the Earth 1590–1990
Animations showing the changes in the Earth's magnetic field.
Disturbance Storm Time (Dst) Display
Dst data from USGS observatories as well as other world partners.
Real-Time HEZF Display
Real-time HEZF index display from USGS geomagnetic observatories internet feeds without filling gaps with satellite data