The ARRL Solar Update (opens in new tab)

Solar activity was at low levels this past week with occasionalB-class and isolated low-level C-class flares. The largest event ofthe period was a C1.4/Sf flare from Region 4429 on May 5.There are currently six numbered regions on the visible disk as 4434decayed to plage and Region 4428 rotated beyond the western limb asan E-type group. The remaining regions mostly showed signs of decay.Region ...