List of magnetic storms in January 2010
Location — Yuzhno-Sakhalinsk (geographic coordinates — 46.97 N 142.73 E | time zone UTC+11)
Days with magnetic storms — 1
21 January 2010 — Magnetic storm of level G1
Maximum of solar activity in January 2010
Solar radio flux (10.7 cm) = 93
Mean planetary A index = 14
Mean planetary Kp index = 5