Hall of storms · #6 / 10
The near-war storm
May 25–26, 1967
Peak Kp
Kp 9.0
G5 — top storm class
Peak moment
21:00 UTC
May 25, 1967
Duration
2 days
May 25–26, 1967
At the ceiling
9.0 ×2
2 intervals at Kp 9.0
What it reached
North America — jammed US early-warning radars, briefly read as an attack
Open in the archive
May 1967 — the three-hourly Kp values, day by day