Geomagnetic storms in Pierre in December 2025

Dec 1, 2025 Pierre

Changes in the maximum daily geomagnetic index Kp in December 2025 for mid latitudes

Location — Pierre (geographic coordinates — 44.37 N -100.34 W | time zone UTC-06)

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List of magnetic storms in December 2025

Location — Pierre (geographic coordinates — 44.37 N -100.34 W | time zone UTC-06)

Solar radio flux (10.7 cm) = 214

Mean planetary A index = 33

Mean planetary Kp index = 6.67