Kp index — November 2021
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
7.7
4 Nov · G4
Storm nights
4
G1×2G2×1G4×1
Time at storm level
3.3%
intervals at Kp ≥ 5−
Avg Kp
1.7
all intervals
Tap a day — its eight intervals open here.
Highlights
- G4 storm · Nov 2–4 · peak Kp 7.7
- Strongest activity since September 2017
2021 · the year at a glance — storm nights by month · year peak Kp 7.7
All-time record: Kp 9.0 — reached on 27 days, most recently 2024-05-11.