List of magnetic storms in May 2009
Location — San Marino (geographic coordinates — 43.92 N 12.47 E | time zone UTC+02 - summer time)
There were no days with an increased level of geomagnetic disturbance in May 2009
Maximum of solar activity in May 2009
Solar radio flux (10.7 cm) = 74
Mean planetary A index = 13
Mean planetary Kp index = 4

