List of magnetic storms in September 2009
Location — Station Vostok (geographic coordinates — 78.45 S 106.83 E | time zone UTC+03)
Days with magnetic storms — 3
21 September 2009 — Magnetic storm of level G1
27 September 2009 — Magnetic storm of level G1
28 September 2009 — Magnetic storm of level G1
Days with geomagnetic disturbances — 1
04 September 2009 — geomagnetic disturbances
Maximum of solar activity in September 2009
Solar radio flux (10.7 cm) = 75
Mean planetary A index = 16
Mean planetary Kp index = 5

