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Geomagnetic storms in Hartford — September 28, 2025

September 28, 2025
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Maximum Kp index on September 28, 2025

Kp = 3

Maximum Kp index on September 28, 2025

The Earth's magnetosphere was quiet

Kp = 3

Geomagnetic storms in Hartford on September 28, 2025

Changes in the geomagnetic index Kp from September 26 to 28, 2025 for mid latitudes

Time zone — UTC−04 — summer time (Hartford | geographic coordinates — 41.77 N 72.68 W)

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

Geomagnetic storms in Hartford in September 2025

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

Time zone — UTC−04 — summer time (Hartford | geographic coordinates — 41.77 N 72.68 W)

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

Geomagnetic activity indices on September 28, 2025

Geomagnetic index Ap 10
Solar radio flux F10.7 171