Solar burst from ‘hole’ in the sun may trigger geomagnetic storms on Earth

An intense series of eruptions on the sun may trigger a strong geomagnetic storm on Earth Thursday (Aug. 18), spawning stunning aurora displays farther south of their usual polar regions.

The geomagnetic storm, a G3 category according to the U.S. National Oceanic and Atmospheric Administration (NOAA), will result from interactions between the strong solar wind blowing from a “hole” in the upper atmosphere of the sun, called the corona, and the Earth’s magnetic field. The storm will get additional fuel from two coronal mass ejections (CMEs) that erupted from the sun earlier this week and are currently on their way to the planet. 



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