The solar storm has a Kp-Index of 6, out of the 0-9 scale. This is higher than any previous solar storms of this cycle, including the March event. What caused this without a flare?
"This solar storm is likely a flare caused storm," TheWeatherSpace.com Senior Meteorologist Kevin Martin said. "It may not have been Earth directed but a blast from the sun a couple days ago hurled a lot of material into space. This material sometimes does not follow a straight line, but can curve with the influence of magnetic fields and gravity."
Mid and High latitude observer should check out the skies and see if the northern and southern lights are around.
Martin is the scientist that thinks solar storms are triggers to earthquake activity. Will it cause a large quake? Time will tell but enjoy the skies for the next nine hours if it is clear, dark, and you are in a higher latitude.