Late spring Auroras, Taken by Jon Helge Edvardsen on May 5, 2026 @ Gjesdal, Rogaland, Southwest Norway

Potential for the Unexpected

SPACEWEATHER.COM NEWS: 05/05/2026

SURPRISE GEOMAGNETIC STORM: A minor yet effective interplanetary shock wave hit Earth’s magnetic field on May 4th (1450 UTC), sparking G2-class (Moderate) geomagnetic storms and auroras. The source of the shock wave is uncertain, probably a stealthy CME that left the sun late last week. Minor G1-class storms are likely on May 5th as we transit the CME’s magnetized wake.

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Arctic Auroras Now and Solar Winds on the Way

SURPRISE GEOMAGNETIC STORM: No CME? No problem. On Sept. 28–29, auroras erupted around the Arctic Circle even though no solar storm was headed for Earth. “It looked like a CME impact,” says Karsten Berger, who watched purple curtains rain down over Yellowknife, Canada.