Kp index — December 1970
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
8.3
14 Dec · G4
Storm nights
3
G1×2G4×1
Time at storm level
2.4%
intervals at Kp ≥ 5−
Avg Kp
1.6
all intervals
Tap a day — its eight intervals open here.
Highlights
- G4 storm · Dec 14 · peak Kp 8.3
1970 · 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.