List of magnetic storms in September 2009
Location — Station Vostok (geographic coordinates — 78.45 S 106.83 E | time zone UTC+03 )
Days with geomagnetic disturbances — 1
28 September 2009 — geomagnetic disturbances
Changes in the maximum daily geomagnetic index Kp in September 2009 for high latitudes
Location — Station Vostok (geographic coordinates — 78.45 S 106.83 E | time zone UTC+03 )

Location — Station Vostok (geographic coordinates — 78.45 S 106.83 E | time zone UTC+03 )
28 September 2009 — geomagnetic disturbances
Solar radio flux (10.7 cm) = 76
Mean planetary A index = 8
Mean planetary Kp index = 4