AFTERGLOW OF A CME: A CME hit Earth's magnetic field on Aug. 17th, sparking a brief but strong (G3) geomagnetic storm. The timing was bad for sky watchers in Europe and North America, where daylight washed out a widespread aurora display. The fading afterglow, however, was visible after nightfall from Poland:
"This is the third night with #aurora this week!" says photographer Marek Nikodem. "This is at latitude +53N."
Frequent mid-latitude auroras are a sign that Solar Maximum has arrived. A severe (G4) storm on August 11-12 sent auroras rippling across North America as far south as Mississippi and Texas. Because Solar Max typically lasts for 2 to 3 years, many more displays can be expected between now and 2026.
There are no comments yet.