List of magnetic storms in December 2004
Location — Kostroma (geographic coordinates — 57.77 N 40.93 E | time zone UTC+03)
Days with magnetic storms — 5
01 December 2004 — Magnetic storm of level G1
07 December 2004 — Magnetic storm of level G1
12 December 2004 — Magnetic storm of level G1
21 December 2004 — Magnetic storm of level G1
22 December 2004 — Magnetic storm of level G1
Days with geomagnetic disturbances — 12
05 December 2004 — geomagnetic disturbances
06 December 2004 — geomagnetic disturbances
09 December 2004 — geomagnetic disturbances
11 December 2004 — geomagnetic disturbances
13 December 2004 — geomagnetic disturbances
16 December 2004 — geomagnetic disturbances
17 December 2004 — geomagnetic disturbances
18 December 2004 — geomagnetic disturbances
25 December 2004 — geomagnetic disturbances
28 December 2004 — geomagnetic disturbances
29 December 2004 — geomagnetic disturbances
30 December 2004 — geomagnetic disturbances
Maximum of solar activity in December 2004
Solar radio flux (10.7 cm) = 111
Mean planetary A index = 36
Mean planetary Kp index = 5