Last night’s G4 geomagnetic storm produced the best and most intense auroral displays since May.
Aurorae dance above Lake Huron as seen from Collingwood, Ontario, Canada. Credit: Tania Wood
Solar cycle 25 continues to deliver, with flares and coronal mass ejections delivering repeated auroral storms visible at latitudes much lower than normal. Last night’s geomagnetic storm reached G4 levels — the strongest since the historic G5 storm of May 10/11.
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