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Geomagnetic storms in Anchorage — October 21, 2025

October 21, 2025
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Maximum Kp index on October 21, 2025

Kp = 2+

Maximum Kp index on October 21, 2025

The Earth's magnetosphere was quiet

Kp = 2+

Geomagnetic storms in Anchorage on October 21, 2025

Changes in the geomagnetic index Kp from October 19 to 21, 2025 for mid latitudes

Time zone — UTC−08 — summer time (Anchorage | geographic coordinates — 61.22 N 149.88 W)

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

Geomagnetic storms in Anchorage in October 2025

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

Time zone — UTC−08 — summer time (Anchorage | geographic coordinates — 61.22 N 149.88 W)

September 2025 November 2025
Daily Kp index in October 2025
PNG API: JSON | TXT

Geomagnetic activity indices on October 21, 2025

Geomagnetic index Ap 9
Solar radio flux F10.7 133