List of magnetic storms in December 2021
Location — Saint Petersburg (geographic coordinates — 59.93 N 30.32 E | time zone UTC+03)
Days with magnetic storms — 2
01 December 2021 — Magnetic storm of level G1
20 December 2021 — Magnetic storm of level G1
Days with geomagnetic disturbances — 4
02 December 2021 — geomagnetic disturbances
19 December 2021 — geomagnetic disturbances
21 December 2021 — geomagnetic disturbances
27 December 2021 — geomagnetic disturbances
Maximum of solar activity in December 2021
Solar radio flux (10.7 cm) = 140
Mean planetary A index = 18
Mean planetary Kp index = 5