Taken by Pierre St. Hilaire on June 23, 2015 at San Jose, California. The red curtains were
faintly visible with the unaided eye. Activity peaked around 5.00 UTC. The photos
were taken 6 miles away from San Jose on the way to Mount Hamilton. Hey, if this
guy can see this in San Jose, I ought to be able to see it here. I'm staying up on
the 24th.
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A series of CMEs hit Earth's magnetic field on June 22nd, producing a severe G4-class geomagnetic storm. Northern Lights spilled across the Canadian border into more than 20 US states.
Meanwhile, more is on the way: big sunspot AR2371 erupted again on June 22nd (18:23 UT), producing a strong M6.5 class solar flare. The explosion also hurled a full-halo CME directly toward Earth: movie. NOAA analysts are still modeling the storm cloud to estimate its likely time of arrival. Best guess: June 24th. Sky watchers should prepare for more geomagnetic stoms and auroras on Wednesday night.
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