Kp index — March 1958
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
7.0
12 Mar · G3
Storm nights
23
G1×14G2×7G3×2
Time at storm level
23.8%
intervals at Kp ≥ 5−
Avg Kp
3.6
all intervals
Tap a day — its eight intervals open here.
Highlights
- G3 storm · Mar 11–26 · peak Kp 7.0
1958 · 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.