Kp index — December 2018
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
4.3
28 Dec
Storm nights
0
none
Time at storm level
0.0%
intervals at Kp ≥ 5−
Avg Kp
1.4
all intervals
Tap a day — its eight intervals open here.
2018 · the year at a glance — storm nights by month · year peak Kp 7.3
All-time record: Kp 9.0 — reached on 27 days, most recently 2024-05-11.