Kp index — February 1941
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
5.7
21 Feb · G2
Storm nights
11
G1×8G2×3
Time at storm level
10.3%
intervals at Kp ≥ 5−
Avg Kp
2.9
all intervals
Tap a day — its eight intervals open here.
Highlights
- G2 storm · Feb 21–24 · peak Kp 5.7
1941 · the year at a glance — storm nights by month · year peak Kp 9.0
All-time record: Kp 9.0 — reached on 27 days, most recently 2024-05-11.