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Geomagnetic storms in Concord — December 20, 2025

December 20, 2025
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Maximum Kp index on December 20, 2025

Kp = 4-

Maximum Kp index on December 20, 2025

The Earth's magnetosphere was quiet

Kp = 4-

Geomagnetic storms in Concord on December 20, 2025

Changes in the geomagnetic index Kp from December 18 to 20, 2025 for mid latitudes

Time zone — UTC−05 (Concord | geographic coordinates — 43.22 N 71.55 W)

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

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

Time zone — UTC−05 (Concord | geographic coordinates — 43.22 N 71.55 W)

November 2025 January 2026
Daily Kp index in December 2025
PNG API: JSON | TXT

Geomagnetic activity indices on December 20, 2025

Geomagnetic index Ap 6
Solar radio flux F10.7 120