Geomagnetic storm forecast for London on December 11, 2025

December 11, 2025

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Forecast for December 11, 2025

geomagnetic storm was expected — level G1 (Kp = 6-)

geomagnetic storm was expected — level G1 (Kp = 6-)

Geomagnetic index Kp forecast from December 11 to 13, 2025 for mid latitudes

Time zone — UTC+00 (London | geographic coordinates — 51.51 N 0.13 W)

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Estimated probability of geomagnetic storms and disturbances from December 11 to 13, 2025.

Information is provided for mid latitudes for time zone UTC+00

Dec 11, 2025 Probability of geomagnetic storms Dec 11, 2025

Dec 12, 2025 Probability of geomagnetic storms Dec 12, 2025

Dec 13, 2025 Probability of geomagnetic storms Dec 13, 2025

Estimated values of Ap and F10.7 indices from December 11 to 13, 2025 for time zone UTC+00

	Dec 11, 2025	Dec 12, 2025	Dec 13, 2025
Ap	10	5	12
F10.7	175	155	140

Forecast of the daily maximum value of geomagnetic index Kp from December 11, 2025 to January 10, 2026 (31 days).

Information is provided for mid latitudes (region — London | time zone UTC+00)

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