Geomagnetic storms in September 2004
Time zone — UTC+00
Geomagnetic storm calendar in September 2004
Days with magnetic storms — 4 Days with geomagnetic disturbances — 8
Ap and F10.7 index values in September 2004
Maximum value of the Ap index for the month — 28 Maximum value of the F10.7 index for the month — 131 Maximum value of the Kp index for the month — 5