Minor geomagnetic storm brings auroras across northern US
Reported byEarthSky ↗·Sourced by Goodlede
A coronal mass ejection that left the Sun on August 14 reached Earth on August 17-18, 2026, triggering a G1 (minor) geomagnetic storm with a Kp index of 5. Aurora sightings were reported across Alaska, Canada, and much of the northern tier of the United States from Washington to Maine.
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