geomagnetic storm

UPDATED (Oct. 11): The National Oceanic and Atmospheric Administration (NOAA) has upgraded its G4-level “severe” geomagnetic storm watch to a G3-level “strong” geomagnetic storm warning after an anticipated coronal mass ejection (CME) arrived at Earth at 11:15 a.m. EST on Thursday, traveling at nearly 1.5 million miles per hour. The G3-level warning is now in […]

In May 2024, stargazers and smartphone photographers witnessed a spectacular moment in time over the course of two nights. Social media and news outlets were dazzled by incandescent light plays from around the world—magenta skies gleamed over the city of Vienna, rainbow hues illuminated a lighthouse in England, emerald displays lit up the lakes of […]

The Federal Energy Regulatory Commission (FERC) last week unanimously adopted a final rule on reliability standards to address the threat to the grid from geomagnetic disturbances (GMD).