Sunspot 1618 facing Earth – Beta-Gamma-Delta magnetic configuration
Active Region 1618 keeps evolving and it has now Beta-Gamma-Delta magnetic configuration that harbors energy for M- and X-class eruptions. It produced an M3.5 flare with peak at 15:30 UTC on November 21, related to a halo CME first seen at 16:12 UTC by SOHO’s LASCO