List of magnetic storms in September 2025
Location — Kostroma (geographic coordinates — 57.77 N 40.93 E | time zone UTC+03)
Days with magnetic storms — 1
02 September 2025 — Magnetic storm of level G2
Days with geomagnetic disturbances — 1
03 September 2025 — geomagnetic disturbances
Maximum of solar activity in September 2025
Solar radio flux (10.7 cm) = 206
Mean planetary A index = 34
Mean planetary Kp index = 6