Geomagnetic storms in San Antonio on February 18, 2026

February 18, 2026

San Antonio change region

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Maximum Kp index on February 18, 2026

Kp = 3+

The Earth's magnetosphere was quiet

Kp = 3+

Changes in the geomagnetic index Kp from February 16 to 18, 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 February 2026 for mid latitudes

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

January 2026 March 2026

PNG API: JSON | TXT

Geomagnetic index A_p	10
Solar radio flux F10.7	119