A G2 – Moderate geomagnetic storm on October 18, 2025, produced an extremely bright red SAR arc visible from the United States to northern Europe. The event showed an unusually efficient release of energy from Earth’s ring current system, challenging current understanding of how the planet’s magnetic field interacts with the atmosphere.
A coronal mass ejection (CME) that hit Earth on March 3, 2024, sparked G2 – Moderate geomagnetic storming with widespread Stable Auroral Red (SAR) arcs over the Baltics and Russia.
On November 5, 2023, observers across the globe were treated to a striking light show, courtesy of a G3 – Strong geomagnetic storm. This solar event was powerful enough to push the typically high-latitude auroras into lower latitudes, with sightings as far south as Texas and Arizona in the United States, as well as in European countries like Italy and Greece. Sightings were also reported in Australia and New Zealand.
