Geomagnetic storms are brief disturbances in Earth's magnetic field and atmosphere (aka the magnetosphere) caused by bursts of radiation and charged particles emitted from the Sun. When this solar matter collides with our planet at high speeds, the surrounding magnetic field deflects it towards the poles.

What is a geomagnetic storm and what causes it?

A geomagnetic storm (commonly referred to as a solar storm) is a temporary disturbance of the Earth's magnetosphere caused by a solar wind shock wave and/or cloud of magnetic field that interacts with the Earth's magnetic field.

What causes geomagnetic disturbance?

A geomagnetic disturbance (GMD), also known as a geomagnetic storm, is a major event in Earth's magnetosphere. It's caused by a very efficient transfer of energy from solar wind into the space environment surrounding Earth.