The magnetic field of sun has become very unstable at some areas as being depicted by the magnetogram from solar dynamic observatory. The sun emitted a class C4 flare and on august 15 emitting many class B Flares. meanwhile from the C4 flare, the first solar radiation storm hit the earth. This was a minor one and hardly did anything other than affecting the magnetic field of the earth.
This was the first solar radiation storm in this solar cycle. Meanwhile, data from graphs of sdo indicate approaching coronal mass ejection will likely influence the earth on aug 17. Also, many coronal mass ejection has been happening on sunday