Sunspot 960 has a "beta-gamma-delta" magnetic field that harbors energy for powerful X-class solar flares.
NOAA forecasters estimate a 20% chance of such a flare during the next 24 hours.
A big eruption could trigger ion storms, radio fadeouts and, if all goes well, auroras.
For instance, an M3-flare from sunspot 960 on June 1st caused a shortwave fadeout over Europe.