Kp index — March 1966
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
7.3
14 Mar · G3
Storm nights
7
G1×2G2×2G3×3
Time at storm level
8.1%
intervals at Kp ≥ 5−
Avg Kp
1.9
all intervals
Tap a day — its eight intervals open here.
Highlights
- G3 storm · Mar 13–14 · peak Kp 7.3
1966 · the year at a glance — storm nights by month · year peak Kp 8.7
All-time record: Kp 9.0 — reached on 27 days, most recently 2024-05-11.