New Sunspot Activity

ADVANCING SUNSPOTS: For the past two weeks, solar activity has been relatively low. Now, a change is in the offing. The farside of the sun is peppered with sunspots, and some of them are beginning to turn toward Earth. NASA’s Solar Dynamics Observatory photographed this pair of active regions advancing over the eastern limb during the early hours of Oct. 11th:

Underlying each nest of glowing magnetic loops is a dark sunspot that poses a threat for solar flares. NOAA forecasters estimate a 40% chance of M-class solar flares and a 5% chance of X-flares during the next 24 hours.