[en] New index of 27-day recurrence of intensive geomagnetic perturbations during recent 100 years is suggested and calculated. Time course of this index is compared with latitudinal distribution of solar magnetic fields and protuberances during 20-th and 21-st cycles. It is shown, that solar wind flows causing essential increase and regularity in recurrence of intensive geomagnetic perturbations during drop of solar activity to the end of 11-year cycles are related with magnetic fields of activity previous 11-year cycle