List of magnetic storms in April 2009
Location — Amsterdam (geographic coordinates — 52.35 N 4.92 E | time zone UTC+02 - summer time )
Days with geomagnetic disturbances — 1
09 April 2009 — geomagnetic disturbances
Changes in the maximum daily geomagnetic index Kp in April 2009 for mid latitudes
Location — Amsterdam (geographic coordinates — 52.35 N 4.92 E | time zone UTC+02 - summer time )

Location — Amsterdam (geographic coordinates — 52.35 N 4.92 E | time zone UTC+02 - summer time )
09 April 2009 — geomagnetic disturbances
Solar radio flux (10.7 cm) = 71
Mean planetary A index = 12
Mean planetary Kp index = 4