coronal mass ejection

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 […]

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 […]

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, […]

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, […]