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Geomagnetic storms in Chicago — December 11, 2025

December 11, 2025
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Maximum Kp index on December 11, 2025

Kp = 5-

Maximum Kp index on December 11, 2025

Geomagnetic disturbances were observed

Kp = 5-

Geomagnetic storms in Chicago on December 11, 2025

Changes in the geomagnetic index Kp from December 9 to 11, 2025 for mid latitudes

Time zone — UTC−06 (Chicago | geographic coordinates — 41.84 N 87.68 W)

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

Geomagnetic storms in Chicago in December 2025

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

Time zone — UTC−06 (Chicago | geographic coordinates — 41.84 N 87.68 W)

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

Geomagnetic activity indices on December 11, 2025

Geomagnetic index Ap 26
Solar radio flux F10.7 146