Geomagnetic storms in Cheyenne in December 2025

01.12.2025 Cheyenne

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Geomagnetic storms in Cheyenne in December 2025

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

Location — Cheyenne (geographic coordinates — 41.15 N -104.8 W | time zone UTC-07 )

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Changes in the maximum daily geomagnetic index Kp in December 2025

This chart in PNG format — high resolution API data: JSON or TXT

List of magnetic storms in December 2025

Location — Cheyenne (geographic coordinates — 41.15 N -104.8 W | time zone UTC-07 )

Days with magnetic storms — 5

03 December 2025 — Magnetic storm of level G2

10 December 2025 — Magnetic storm of level G2

12 December 2025 — Magnetic storm of level G1

21 December 2025 — Magnetic storm of level G1

22 December 2025 — Magnetic storm of level G1

Days with geomagnetic disturbances — 6

04 December 2025 — geomagnetic disturbances

05 December 2025 — geomagnetic disturbances

06 December 2025 — geomagnetic disturbances

11 December 2025 — geomagnetic disturbances

17 December 2025 — geomagnetic disturbances

23 December 2025 — geomagnetic disturbances

Maximum of solar activity in December 2025

Solar radio flux (10.7 cm) = 220

Mean planetary A index = 33

Mean planetary Kp index = 6.67