On May 22nd, sunspot AR2824 unleashed a sequence of solar flares unlike 
anything we've seen in years. In only 24 hours, NASA's Solar Dynamics 
Observatory recorded 10 C-flares and 2 M-flares: movie. The rapidfire 
explosions hurled multiple overlapping CMEs into space. According to 
NOAA models, a combined CME will hit Earth's magnetic field during the 
late hours of May 25th, potentially sparking G2-class geomagnetic 
storms.
https://spaceweather.com <https://spaceweather.com/>
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