GEOMAGNETIC STORM UNDERWAY, A GIANT HOLE IN THE SUN'S ATMOSPHERE: A G2-class Geomagnetic storm is underway on March 26th as Earth enters a stream of solar wind flowing from a giant hole in the sun's atmosphere. It's one of the biggest "coronal holes" in years, and its emissions could engulf Earth for the next 24 to 48 hours. High-latitude sky watchers should be alert for auroras during this time.

This annotated image from NASA's Solar Dynamics Observatory shows the outlines of a giant hole in the sun's atmosphere. Credit: Spaceweather.com