Kp index — June 1978
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
7.7
29 Jun · G4
Storm nights
12
G1×4G2×6G3×1G4×1
Time at storm level
11.7%
intervals at Kp ≥ 5−
Avg Kp
2.8
all intervals
Tap a day — its eight intervals open here.
Highlights
- G4 storm · Jun 29–30 · peak Kp 7.7
1978 · 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.