ARRL Solar Update

Solar activity was at low levels with seven numbered active regions on the disk.   The largest event of the period was a C3.7 flare on March 25 from Region 4400. Region 4403, which was numbered last period, is the suspected source of several flares observed beyond the limb prior to its rotation onto the disk. Due to its proximity to the northeast limb, foreshortening continues to prevent a definitive c...