Tag Archive | co-rotating interaction region (CIR)

SPACEWEATHER: CIR Sparks Auroras

Auroras Taken by Anna Eastman on March 8, 2025 @ Agassiz Wildlife Refuge, Holt MN

Solar Winds and Active Sunspot in the Earth-directed Position

SPACEWEATHER.COM NEWS: 03/11/2025

CIR HITS EARTH, SPARKS AURORAS: If you’ve never heard of a co-rotating interaction region (CIR), just think of it as a mini CME. One hit Earth on March 8th, sparking more than 10 hours of geomagnetic storms. “The auroras in Minnesota were some of the brightest I’ve seen in awhile,” reports Anna Eastman, who watched the show from the Agassiz Wildlife Refuge:

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