Geomagnetic storms in Springfield in September 2004
Time zone — UTC−05 — summer time (Springfield | 39.78 N 89.65 W)
Geomagnetic storm calendar in September 2004 by time in Springfield
Days with magnetic storms — 5 Days with geomagnetic disturbances — 6
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