From SpaceWeather:
SIGNIFICANT EXPLOSION: A solar radiation storm is in progress on May 22nd following an M5-class solar flare on the sun's western limb. The explosion not only accelerated a hailstorm of protons toward our planet, but also produced a magnificent CME, which might deliver a glancing blow to Earth's magnetic field in the days ahead.
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.
