Recent solar flares should make for some spectacular aurorae tonight and Friday. Solar flares are the largest in the last four years, and should put on a spectacular light show. Solar radiation makes Earth’s ionosphere more reflective to HF radio waves, so you can transmit your signals further. Some of these charged particles are deflected or trapped by Earth’s magnetic field, but some make it through to our atmosphere and excite the oxygen and nitrogen atoms, making them glow blue, red, or magenta.”]
Source: https://www.csoonline.com/article/2127152/biggest-solar-flares-in-4-years-heading-toward-earth.html