CRACKLING SUNSPOT: AR1936 is waking up. The sunspot has a ‘beta-gamma’ magnetic field that harbors energy for strong eruptions, yet it has been quiet for days. Now AR1936 is beginning to crackle with flares. NASA’s Solar Dynamics Observatory recorded the extreme ultraviolet flash from an almost-M-class flare at 1800 UT on Dec. 28th:

Because the sunspot is facing Earth, any flares emanating from it are going to be geoeffective. So far, the extreme ultraviolet “crackles” have produced only minor waves of ionization in our planet’s upper atmosphere. Earth-effects will increase, however, if the activity continues to intensify

fr.spaceweather.com