SEVERE GEOMAGNETIC STORM: A coronal mass ejection (CME) hit Earth's
magnetic field during the early hours of March 17th, triggering a
magnetic disturbance that has escalated into the strongest geomagnetic
storm of the current solar cycle (Kp=8). During the hours before
sunrise on St. Patrick's Day, bright green skies appeared over multiple
US states including Wisconsin, Washington, Minnesota, and the Dakotas.