List of magnetic storms in September 2009
Location — Ulan-Ude (geographic coordinates — 51.83 N 107.6 E | time zone UTC+08 )
Days with geomagnetic disturbances — 1
28 September 2009 — geomagnetic disturbances
Changes in the maximum daily geomagnetic index Kp in September 2009 for mid latitudes
Location — Ulan-Ude (geographic coordinates — 51.83 N 107.6 E | time zone UTC+08 )

Location — Ulan-Ude (geographic coordinates — 51.83 N 107.6 E | time zone UTC+08 )
28 September 2009 — geomagnetic disturbances
Solar radio flux (10.7 cm) = 76
Mean planetary A index = 8
Mean planetary Kp index = 4