Hall of storms · #1 / 10
The Halloween storms
October 29–30, 2003
Peak Kp
Kp 9.0
G5 — top storm class
Peak moment
06:00 UTC
October 29, 2003
Duration
2 days
October 29–30, 2003
At the ceiling
9.0 ×3
3 intervals at Kp 9.0
What it reached
Europe & North America — aurora to the Mediterranean and Florida; Malmö lost power
Open in the archive
October 2003 — the three-hourly Kp values, day by day