GET READY FOR MORE FLARES: A new and potentially very active sunspot group emerged today. It announced itself with an X1-class solar flare, which caused a strong shortwave radio blackout over the Atlantic Ocean and Europe. More flares may be in the offing as the sunspot turns toward Earth. Developing story @ Spaceweather.com.

 
Above: The extreme ultraviolet flash from today’s X-class solar flare. Credit: NASA’s Solar Dynamics Observatory