Kp index — 1952
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
8.3
21 Apr · G4
Storm nights
21
G1×10G2×5G3×5G4×1
Time at storm level
33.3%
intervals at Kp ≥ 5−
Avg Kp
3.7
all intervals
Tap a day — its eight intervals open here.
Highlights
- G4 storm · Apr 21–22 · peak Kp 8.3
1952 · the year at a glance — storm nights by month · year peak Kp 8.3
All-time record: Kp 9.0 — reached on 27 days, most recently 2024-05-11.