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Geomagnetic storms in Helsinki — September 11, 2025

September 11, 2025
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Maximum Kp index on September 11, 2025

Kp = 4

Maximum Kp index on September 11, 2025

Geomagnetic disturbances were observed

Kp = 4

Geomagnetic storms in Helsinki on September 11, 2025

Changes in the geomagnetic index Kp from September 9 to 11, 2025 for mid latitudes

Time zone — UTC+03 — summer time (Helsinki | geographic coordinates — 60.18 N 24.93 E)

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Geomagnetic index Kp for 3 days
PNG API: JSON | TXT

Geomagnetic storms in Helsinki in September 2025

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

Time zone — UTC+03 — summer time (Helsinki | geographic coordinates — 60.18 N 24.93 E)

August 2025 October 2025
Daily Kp index in September 2025
PNG API: JSON | TXT

Geomagnetic activity indices on September 11, 2025

Geomagnetic index Ap 10
Solar radio flux F10.7 115