Extreme Space Weather Events during the First Cycles of Epochs with Decreased Solar Activity

Abstract The problem of the distribution extreme and very strong magnetic storms with intensities (G5, G4) in first cycles (12 24) epochs lowered solar activity was considered based on homogeneous series geomagnetic index Aa allowance for modern scale intensity disturbances near-Earth space scenario cyclicity. significant decrease number such events active phenomena last cycle may indicate that sunspot flare 12 significantly higher than 24, but it lower epoch increased activity.