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A coronal mass ejection on Jan. 20, 2005, produced an extreme amount of solar particles, seen as white static in this imagery from ESA/NASA's Solar and Heliospheric Observatory. Closer to Earth, it created a solar storm with an unusual combination of strong and weak effects.
According to Nasa's Solar Dynamics Observatory (SDO) team a single, dynamic active region unleashed over half a dozen solar flares in about 24 hours from 25 to 26 August. The two larger flares were M-class (moderate) flares and the others were smaller flares. This animation shows an ejection associated with the flares