geomagnetic disturbance

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 […]

Risks posed by geomagnetic disturbance (GMD) and electromagnetic pulse (EMP) events add challenges to an already complex power system environment. But they remain crucial to address. How prepared is the power grid to withstand these powerful natural and man-made disturbances? On the evening of May 10, grid operator PJM Interconnection activated a rare geomagnetic disturbance […]

Grid operator PJM Interconnection has issued a geomagnetic disturbance (GMD) warning after observing “persistent geomagnetically induced current (GIC) at multiple stations” late on Friday.  PJM initially issued a GMD warning on May 10 to generators and transmission operators that an ongoing severe solar storm could affect its system between 1:48 p.m. and 9 p.m. on […]

Perhaps the most devastating thing that could happen in any developed country would be widespread catastrophic damage to its electric power grid. Nearly everything in an industrialized nation relies on electricity to function. Without it, normal water supplies, sewer systems, and communication services are cut off. Furthermore, things like food and transportation are quickly affected […]

Technology advancements and new regulatory requirements could reshape how power plant owners operate and maintain large power transformers. Experts outline emerging strategies and call attention to overlooked

A severe solar storm striking the continental U.S. could cause trillions of dollars in damage to the global economy and shut down portions of the U.S. grid for up to a year, according to a new study prepared by the Cambridge Centre for Risk Studies for insurance firm AIG. The study, Helios Solar Storm Scenario, […]

The Department of Homeland Security (DHS) internally recognizes that a power grid failure resulting from an electromagnetic pulse (EMP) or a solar storm can pose great risk to the security of the nation, but it hasn’t prepared adequately, the Government Accountability Office (GAO) said in a newly released report. The GAO’s 68-page report, “Federal Agencies […]

The societal impact of a “Black Sky Day”—a term used by electric infrastructure security experts when discussing a collapse of the North American power grid—would be devastating, according to Dr. Daniel Baker, distinguished professor of Planetary and Space Physics at the University of Colorado, Boulder. Baker testified before two subcommittees of the U.S. House of […]

When a large electromagnetic pulse (EMP) or geomagnetic disturbance (GMD) event occurs—which, according to Sen. Ron Johnson (R-Wis.), there is “100% certainty” will happen at some time in the future—as many as 9 out of 10 people in the U.S. could die. Johnson, chairman of the U.S. Senate Committee on Homeland Security & Governmental Affairs, […]