List of magnetic storms in May 2009
Location — Sarnia (geographic coordinates — 42.99 N -82.4 W | time zone UTC-05)
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