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Geomagnetic storms in San Francisco — October 21, 2026

October 21, 2026
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Maximum Kp index on October 21, 2026

Kp = 5-

Maximum Kp index on October 21, 2026

Geomagnetic disturbances were observed

Kp = 5-

Geomagnetic storms in San Francisco on October 21, 2026

Changes in the geomagnetic index Kp from October 19 to 21, 2026 for mid latitudes

Time zone — UTC−07 — summer time (San Francisco | geographic coordinates — 37.73 N 123.03 W)

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

Geomagnetic storms in San Francisco in October 2026

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

Time zone — UTC−07 — summer time (San Francisco | geographic coordinates — 37.73 N 123.03 W)

September 2026
Daily Kp index in October 2026
PNG API: JSON | TXT

Geomagnetic activity indices on October 21, 2026

Geomagnetic index Ap 19
Solar radio flux F10.7 115