Geomagnetic storms in Concord in September 2025

Sep 1, 2025 Concord

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

Location — Concord (geographic coordinates — 43.22 N -71.55 W | time zone UTC-04 - summer time)

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List of magnetic storms in September 2025

Location — Concord (geographic coordinates — 43.22 N -71.55 W | time zone UTC-04 - summer time)

Solar radio flux (10.7 cm) = 206

Mean planetary A index = 34

Mean planetary Kp index = 6