From NASA’s Spaceweather.com:
RADIATION STORM: The flux of high-energy protons near Earth is approximately 100,000 times greater than normal following an M8-category solar flare near active region 9218 on the Sun’s western limb.
The sun has been unusually active lately, even given the fact that we are moving through a solar max. The flare that has led to the present magnetic storm was an extremely powerful M-8 leading to an S4-class radiation storm, which is the most powerful to strike the earth since August of 1976.
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