List of magnetic storms in May 2004
Location — Sarnia (geographic coordinates — 42.99 N -82.4 W | time zone UTC-04 - summer time)
Days with magnetic storms — 1
20 May 2004 — Magnetic storm of level G1
Days with geomagnetic disturbances — 10
06 May 2004 — geomagnetic disturbances
07 May 2004 — geomagnetic disturbances
11 May 2004 — geomagnetic disturbances
12 May 2004 — geomagnetic disturbances
13 May 2004 — geomagnetic disturbances
14 May 2004 — geomagnetic disturbances
22 May 2004 — geomagnetic disturbances
24 May 2004 — geomagnetic disturbances
29 May 2004 — geomagnetic disturbances
30 May 2004 — geomagnetic disturbances
Maximum of solar activity in May 2004
Solar radio flux (10.7 cm) = 118
Mean planetary A index = 17
Mean planetary Kp index = 5