List of magnetic storms in December 2021
Location — Anchorage (geographic coordinates — 61.22 N -149.88 W | time zone UTC-09)
Days with magnetic storms — 1
19 December 2021 — Magnetic storm of level G1
Days with geomagnetic disturbances — 4
01 December 2021 — geomagnetic disturbances
20 December 2021 — geomagnetic disturbances
27 December 2021 — geomagnetic disturbances
31 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