In the eight days from October 19 to October 27, sunspot AR2192 was a hive of solar activity. The sunspot unleashed numerous solar flares, five of which were X-class — the strongest classification on the solar flare scale.

A new video from NASA illustrates the sunspot’s activity during this period when the sunspot was facing Earth. Despite the flares from the region, there was not a single coronal mass ejection to impact Earth during that time.

AR2192, which is no longer visible from Earth, was a massive sunspot approximately the size of Jupiter and the largest on record since 1990 — “one for the history books,” writes the Space Weather Prediction Center. If you were able to safely view the eclipse on October 23, the sunspot was hard to miss.


An enhanced, close up view of the AR2192 sunspot, which was “a sprawling solar active region comparable in size to the diameter of Jupiter,” NASA writes . (NASA)

Yet another active sunspot region is now rotating into Earth’s view. Active Region 2205 has emitted at least four M-class flares in the past 24 hours. The Space Weather Prediction Center is forecasting a 25 percent chance of an M-class flare each day for the next three days. They write:

The region [2205] has been the source of two Radio Blackout storms on 3 November, an R1 (Minor) Radio Blackout and an R2 (Moderate) Radio Blackout.  It has also been the source of several coronal mass ejections (CMEs), which Region [2192] seemed to be incapable of producing.  None of the CMEs seen so far pose a threat to Earth, but as the region rotates into a more favorable position, that could change.  SWPC forecasters are keeping a close eye on this region and we will keep this page updated as conditions warrant.