Geomagnetic storms in San Jose on September 9, 2026

September 9, 2026

San Jose change region

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Maximum Kp index on September 9, 2026

Kp = 3

The Earth's magnetosphere was quiet

Kp = 3

Changes in the geomagnetic index Kp from September 7 to 9, 2026 for mid latitudes

Time zone — UTC−07 — summer time (San Jose | geographic coordinates — 37.3 N 121.81 W)

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PNG API: JSON | TXT

Changes in the maximum daily geomagnetic index Kp in September 2026 for mid latitudes

Time zone — UTC−07 — summer time (San Jose | geographic coordinates — 37.3 N 121.81 W)

August 2026

PNG API: JSON | TXT

Geomagnetic index A_p	12
Solar radio flux F10.7	109