FARSIDE ERUPTION: An active region located just behind the sun’s northeastern limb erupted this morning, producing an X-ray flash that registered M1.5 on the Richter Scale of Solar Flares — despite the fact that it was partially eclipsed by the edge of the sun. The true intensity of the flare was much greater, possibly X-class. The explosion also hurled a spectacular CME into space:

Type II radio emissions from the expanding cloud suggest an expansion velocity of at least 510 km/s (1.1 million mph). That’s a typical speed for CMEs.

Within a few days, the sunspot responsible for this outburst will rotate around to the Earthside of the sun. At that time, Earth-directed solar activity could increase. August and September were quiet months, but in October the sun seems to be waking up

fr/spaceweather.com