Geomagnetic storms in San Antonio on September 10, 2025

September 10, 2025

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Maximum Kp index on September 10, 2025

Kp = 4+

Geomagnetic disturbances were observed

Kp = 4+

Changes in the geomagnetic index Kp from September 8 to 10, 2025 for mid latitudes

Time zone — UTC−05 — summer time (San Antonio | geographic coordinates — 29.46 N 98.52 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−05 — summer time (San Antonio | geographic coordinates — 29.46 N 98.52 W)

August 2025 October 2025

PNG API: JSON | TXT

Geomagnetic index A_p	13
Solar radio flux F10.7	119