Geomagnetic Storms in September, 2005
8 storms ↑ MAX: Kp 9 ↓ MIN: Kp 1

In September 2005, 8 geomagnetic storms were recorded; the strongest was Kp 9 on September 10, 2005. The longest run of consecutive active days was 2 (1 Sep–2 Sep).

Most powerful Geomagnetic Storms in September 2005

Date Class Level Duration
September 10, 2005 Kp 9 Extreme (G5) 69 h
September 15, 2005 Kp 7 Strong (G3) 9 h
September 2, 2005 Kp 6 Moderate (G2) 18 h
September 1, 2005 Kp 5 Minor (G1) 3 h
September 2, 2005 Kp 5 Minor (G1) 3 h
September 4, 2005 Kp 5 Minor (G1) 3 h
September 10, 2005 Kp 5 Minor (G1) 3 h
September 14, 2005 Kp 5 Minor (G1) 6 h