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Geomagnetic storms in Honolulu — December 21, 2025

December 21, 2025
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Maximum Kp index on December 21, 2025

Kp = 5

Maximum Kp index on December 21, 2025

A geomagnetic storm was recorded — level G1

Kp = 5

Geomagnetic storms in Honolulu on December 21, 2025

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

Time zone — UTC−10 (Honolulu | geographic coordinates — 21.31 N 157.83 W)

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Geomagnetic index Kp for 3 days
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Geomagnetic storms in Honolulu in December 2025

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

Time zone — UTC−10 (Honolulu | geographic coordinates — 21.31 N 157.83 W)

November 2025 January 2026
Daily Kp index in December 2025
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Geomagnetic activity indices on December 21, 2025

Geomagnetic index Ap 27
Solar radio flux F10.7 124