Geomagnetic storms — May 18, 2015
Geomagnetic storms in London on May 18, 2015
geomagnetic storm was occured — level G1.0 (Kp = 5.00)
Geomagnetic storms in the last 3 days
Changes in the geomagnetic index Kp from May 16 to 18, 2015 for mid latitudes
Location — London (geographic coordinates — 51.51 N -0.13 W | time zone UTC+00)

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Geomagnetic storms in London in May 2015
Changes in the maximum daily geomagnetic index Kp in May 2015 for mid latitudes
Location — London (geographic coordinates — 51.51 N -0.13 W | time zone UTC+00)

This chart in PNG format — high resolution
API data: JSON or TXT
Other activity indices
Index AP = 16
Index F10.7 = 115