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Geomagnetic storms in Pierre — April 21, 2026

April 21, 2026
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Maximum Kp index on April 21, 2026

Kp = 4+

Maximum Kp index on April 21, 2026

Geomagnetic disturbances were observed

Kp = 4+

Geomagnetic storms in Pierre on April 21, 2026

Changes in the geomagnetic index Kp from April 19 to 21, 2026 for mid latitudes

Time zone — UTC−05 — summer time (Pierre | geographic coordinates — 44.37 N 100.34 W)

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

Geomagnetic storms in Pierre in April 2026

Changes in the maximum daily geomagnetic index Kp in April 2026 for mid latitudes

Time zone — UTC−05 — summer time (Pierre | geographic coordinates — 44.37 N 100.34 W)

March 2026 May 2026
Daily Kp index in April 2026
PNG API: JSON | TXT

Geomagnetic activity indices on April 21, 2026

Geomagnetic index Ap 19
Solar radio flux F10.7 112