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Geomagnetic storms in Cheyenne — September 11, 2025

September 11, 2025
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Maximum Kp index on September 11, 2025

Kp = 3-

Maximum Kp index on September 11, 2025

The Earth's magnetosphere was quiet

Kp = 3-

Geomagnetic storms in Cheyenne on September 11, 2025

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

Time zone — UTC−06 — summer time (Cheyenne | geographic coordinates — 41.15 N 104.8 W)

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

Geomagnetic storms in Cheyenne in September 2025

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

Time zone — UTC−06 — summer time (Cheyenne | geographic coordinates — 41.15 N 104.8 W)

August 2025 October 2025
Daily Kp index in September 2025
PNG API: JSON | TXT

Geomagnetic activity indices on September 11, 2025

Geomagnetic index Ap 10
Solar radio flux F10.7 115