List of magnetic storms in October 2004
Location — Bismarck (geographic coordinates — 46.81 N -100.78 W | time zone UTC-05 - summer time)
Days with magnetic storms — 3
12 October 2004 — Magnetic storm of level G1
13 October 2004 — Magnetic storm of level G1
14 October 2004 — Magnetic storm of level G1
Days with geomagnetic disturbances — 7
02 October 2004 — geomagnetic disturbances
03 October 2004 — geomagnetic disturbances
20 October 2004 — geomagnetic disturbances
24 October 2004 — geomagnetic disturbances
25 October 2004 — geomagnetic disturbances
29 October 2004 — geomagnetic disturbances
30 October 2004 — geomagnetic disturbances
Maximum of solar activity in October 2004
Solar radio flux (10.7 cm) = 140
Mean planetary A index = 35
Mean planetary Kp index = 5