Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted.  For more information, please see www.doi.gov/shutdown

Data and Tools

Geomagnetism

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

Filter Total Items: 7
Date published: July 27, 2018

Geomagnetism Plots

Real-time display of USGS geomagnetic observatory data feeds and derived products.

Date published: July 25, 2018

Download Real-Time Data

Download real-time and definitive data and indices from USGS geomagnetic observatories.

Date published: July 23, 2018

Magnetic Disturbance Events

View reports on magnetic disturbance events.

Date published: July 21, 2018

Models

View and download model results from magnetic studies.

Date published: July 19, 2018

Real-Time Disturbance Storm Time (Dst) Display

Real-time Dst data from USGS observatories as well as other world partners.

Date published: July 18, 2018

Magnetic Disturbance Movies

Movie-maps of low-latitude horizontal-intensity magnetic disturbance are derived from magnetic vector time series data collected at multiple ground-based observatories. Using a technique similar to that used in the calculation of Dst, a quiet time baseline is subtracted from the time series from each observatory. The remaining disturbance time series are shown in a polar coordinate system that...

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