List of magnetic storms in October 2004
Location — Station Vostok (geographic coordinates — 78.45 S 106.83 E | time zone UTC+03)
Days with magnetic storms — 11
02 October 2004 — Magnetic storm of level G1
03 October 2004 — Magnetic storm of level G2
11 October 2004 — Magnetic storm of level G1
13 October 2004 — Magnetic storm of level G3
14 October 2004 — Magnetic storm of level G3
15 October 2004 — Magnetic storm of level G2
20 October 2004 — Magnetic storm of level G2
25 October 2004 — Magnetic storm of level G1
29 October 2004 — Magnetic storm of level G1
30 October 2004 — Magnetic storm of level G2
31 October 2004 — Magnetic storm of level G1
Days with geomagnetic disturbances — 4
04 October 2004 — geomagnetic disturbances
06 October 2004 — geomagnetic disturbances
08 October 2004 — geomagnetic disturbances
12 October 2004 — geomagnetic disturbances
Maximum of solar activity in October 2004
Solar radio flux (10.7 cm) = 140
Mean planetary A index = 58
Mean planetary Kp index = 7

