High-speed solar winds from a "hole" in the sun's atmosphere are set to hit Earth's magnetic field on Wednesday (Aug 3.), triggering a minor G-1 geomagnetic storm. Forecasters at the National Oceanic and Atmospheric Administration's Space Weather Prediction Center (SWPC) made the prediction after observing that "gaseous material is flowing from a southern hole in the sun's atmosphere," according to spaceweather.com. Coronal holes are areas in the sun's upper atmospher...