Geomagnetic storms in San Antonio on January 20, 2026

January 20, 2026

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Maximum Kp index on January 20, 2026

Kp = 8

A geomagnetic storm was recorded — level G4

Kp = 8

Changes in the geomagnetic index Kp from January 18 to 20, 2026 for mid latitudes

Time zone — UTC−06 (San Antonio | geographic coordinates — 29.46 N 98.52 W)

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PNG API: JSON | TXT

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

Time zone — UTC−06 (San Antonio | geographic coordinates — 29.46 N 98.52 W)

December 2025 February 2026

PNG API: JSON | TXT

Geomagnetic index A_p	143
Solar radio flux F10.7	178