Kp index — October 1948
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
8.3
17 Oct · G4
Storm nights
16
G1×4G2×7G3×2G4×3
Time at storm level
21.4%
intervals at Kp ≥ 5−
Avg Kp
3.2
all intervals
Tap a day — its eight intervals open here.
Highlights
- G4 storm · Oct 17–24 · peak Kp 8.3
1948 · 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.