Severe solar storm may stress power grids as U.S. deals with major hurricanes NPRA severe geomagnetic storm could cause colorful auroras over Northern California and Alabama CNNSolar storm expected to bring northern lights: How, where to see aurora this week Axios‘Severe’ geomagnetic storm to slam Earth Thursday, with auroras possible as far south as California and Alabama Livescience.comBest opportunity for northern lights viewing since May arrives Thursday KING5.com