In a solar atmosphere, a giant hole has opened and it turns to the Earth. NASA’s Observatory Solar Dynamics Laboratory monitors the structure that “saddled” the Sun’s equator directly behind the sunspot AR2670.
This is a “coronal hole”, an area where the solar magnetic field has peeled back and released into the space a gaseous material. The stream of the solar wind flowing out of this hole must reach our planet on August 12. The reinforced magnetic fields at the leading edge of the stream will interact with the magnetosphere of our planet, possibly causing soft geomagnetic storms.
Coincidentally, the solar wind will arrive during the peak of the Perseid meteor shower. At high latitudes, sky observers can detect the green glow of auroras in photos of decaying meteors.