Geomagnetic storms in Ottawa on September 4, 2025

September 4, 2025

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Maximum Kp index on September 4, 2025

Kp = 3

The Earth's magnetosphere was quiet

Kp = 3

Changes in the geomagnetic index Kp from September 2 to 4, 2025 for mid latitudes

Time zone — UTC−04 — summer time (Ottawa | geographic coordinates — 45.42 N 75.71 W)

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PNG API: JSON | TXT

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

Time zone — UTC−04 — summer time (Ottawa | geographic coordinates — 45.42 N 75.71 W)

August 2025 October 2025

PNG API: JSON | TXT

Geomagnetic index A_p	10
Solar radio flux F10.7	172