Kp index — 2023
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
8.3
23 Apr · G4
Storm nights
3
G1×1G4×2
Time at storm level
3.8%
intervals at Kp ≥ 5−
Avg Kp
2.2
all intervals
Tap a day — its eight intervals open here.
Highlights
- G4 storm · Apr 23–24 · peak Kp 8.3
- Strongest activity since September 2017
2023 · 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.