List of magnetic storms in September 2011
Location — Ryazan (geographic coordinates — 54.6 N 39.7 E | time zone UTC+03)
Days with magnetic storms — 8
09 September 2011 — Magnetic storm of level G3
10 September 2011 — Magnetic storm of level G1
11 September 2011 — Magnetic storm of level G1
13 September 2011 — Magnetic storm of level G1
17 September 2011 — Magnetic storm of level G2
26 September 2011 — Magnetic storm of level G4
27 September 2011 — Magnetic storm of level G3
28 September 2011 — Magnetic storm of level G1
Days with geomagnetic disturbances — 3
12 September 2011 — geomagnetic disturbances
29 September 2011 — geomagnetic disturbances
30 September 2011 — geomagnetic disturbances
Maximum of solar activity in September 2011
Solar radio flux (10.7 cm) = 190
Mean planetary A index = 67
Mean planetary Kp index = 8