G4 (severe) geomagnetic storms are where problems become more serious. Power grids may experience voltage control issues, with sections of the grid losing power as protective systems trip due to ...

That storm is likely to be in the G4 class — the second-highest level on the SWPC's geomagnetic storm scale, which takes into account both severity and potential impacts.

Rising concentrations of carbon dioxide in the upper atmosphere will change the way geomagnetic storms impact Earth, with ...

A coronal mass ejection hurtling from the sun toward Earth could unleash the northern lights in up to 18 states in the US.

Cooling in the upper atmosphere from rising CO₂ could make future geomagnetic storms deliver sharper jolts especially to ...

A geomagnetic storm will expand visibility of the aurora borealis Thursday and Friday nights. See maps of which states will ...

Missouri stargazers will have the opportunity to view the Perseid Meteor Shower, a full moon, and a geomagnetic storm watch in the next 5 days.

A coronal mass ejection hurtling from the sun toward Earth could trigger a geomagnetic storm, making the northern lights ...