Play the movie again. The speckles dancing across the image are caused by high-energy solar protons striking the CCD camera in SOHO's coronagraph. Those protons were guided toward Earth by magnetic field lines that connect our planet to the blast site. The rain of protons is what forecasters mean by a "radiation storm." This storm ranks S2 on NOAA storm scales.
Although the explosion was not Earth-directed, we cannot yet rule out the possibility that the CME could deliver a glancing blow to Earth in the days ahead. Stay tuned for further analysis. Aurora alerts: text, voice.
Watch for a potential increase in earthquakes/volcanoes when the proton storm reaches Earth; there is a theory that they have an effect. The previous 'glancing blow' has increased seismicity throughout this week, via checks of the USGS site or something else is the causal factor, although protons do correlate. Just saw a 7.4m in Tonga.