It was one of the strongest geomagnetic storms in years.

During a geomagnetic storm, the number of particles in the ring current will increase.

On September 1 and 2nd, the largest recorded geomagnetic storm occurred.

During geomagnetic storms, the Sun will dominate even at these low frequencies.

Rapid and sharp changes of it may indicate a geomagnetic storm.

"We expected major to severe geomagnetic storm levels, and that's exactly what we're getting now - right on target."

The May 1921 geomagnetic storm was a significant event caused by an increase in solar radiation.

Geomagnetic storms will increase solar wind activity and could have serious affects on the Earth.

Understand how the radiation belts change in the context of geomagnetic storms.

It therefore has a large effect on the electrodynamics of geomagnetic storms.

A G4 (severe) geomagnetic storm was reported on September 26.

Despite the strength of the geomagnetic storm, no electrical power distribution failures were reported.

The magnetosphere is very important in protecting the Earth against geomagnetic storms.

The geomagnetic storm reached a G4 (severe) level, enough to make power outages.

Space weather forecasts are used to predict when these geomagnetic storm events might occur.

Geomagnetic storms have similar effects, but with greater vigor.

The Sun has thrown out a small piece of itself, causing a major geomagnetic storm over the Earth.

When those particles do arrive, they'll disrupt the Earth's magnetic field and may cause a geomagnetic storm.

March 1989 geomagnetic storm Solar activity has a regular cycle, with peaks approximately every 11 years.

The E3 component has similarities to a geomagnetic storm caused by a solar flare.

Geomagnetic storms, indicated by a K of 5 or higher, have no direct effect on propagation.

Geomagnetic storm levels reached the G3 on October 1.

Still, neither B nor the solar wind can fully explain the seasonal behavior of geomagnetic storms.

During geomagnetic storms, this system can be severely hampered by radio clutter.

A geomagnetic storm similar to the Carrington event of 1859 could bring down the electrical grid.