Geomagnetic storms in San Francisco on January 31, 2026

January 31, 2026

San Francisco change region

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Maximum Kp index on January 31, 2026

Kp = 2-

The Earth's magnetosphere was quiet

Kp = 2-

Changes in the geomagnetic index Kp from January 29 to 31, 2026 for mid latitudes

Time zone — UTC−08 (San Francisco | geographic coordinates — 37.73 N 123.03 W)

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PNG API: JSON | TXT

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

Time zone — UTC−08 (San Francisco | geographic coordinates — 37.73 N 123.03 W)

December 2025 February 2026

PNG API: JSON | TXT

Geomagnetic index A_p	5
Solar radio flux F10.7	141