Geomagnetic storms in Concord — Sep 11, 2025
Geomagnetic storms in Concord on Sep 11, 2025
the Earth's magnetosphere was quiet (Kp = 2.67)
Geomagnetic storms in the last 3 days
Changes in the geomagnetic index Kp from September 9 to 11, 2025 for mid latitudes
Location — Concord (geographic coordinates — 43.22 N -71.55 W | time zone UTC-04 - summer time)
This chart in PNG format — high resolution
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Geomagnetic storms in Concord in September 2025
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)
This chart in PNG format — high resolution
API data: JSON or TXT
Other activity indices
Index AP = 10
Index F10.7 = 117