two coronal holes — openings in the sun's magnetic field — currently exist in the sun's upper atmosphere (corona), spewing large quantities of speedy solar wind. This solar wind, a stream of magnetized gas, might trigger geomagnetic storms at Earth in the coming days when it interacts with the planet's magnetic field. Met Office only expects a minor, G1 geomagnetic storm, but even that could be enough to supercharge aurora displays at higher latitudes.
Magnetics at work.
Okay, this is cool as fuck and completely mesmerizing if you keep the phrase "as tall as 14 EARTHS" in your head when you watch it.