On January 22, a January 22 M8.7 class flare caused the biggest solar storm since 2005. Airplanes had to change routes, and the power grid and satellites were affected. It also caused some of the best auroras ever seen.
There's a solar Coronal Mass Ejection travelling towards us at 1,400 miles per second, the largest solar storm since 2005. It will hit Earth around 2pm GMT, causing fluctuations on the power grid and disruptions to the Global Positioning System.