Geomagnetic storms in 2009
In 2009, the maximum daily Kp reached storm level (Kp 5 or more) on 4 days. 0 days were strong (Kp 7 or more) and 0 extreme (Kp 9).
Max Kp6−
Storm days (Kp ≥ 5)4
Strong (Kp ≥ 7)0
Extreme (Kp 9)0
Storm days by month
Strongest storms
| Date | Max Kp | Daily Ap |
|---|---|---|
| July 22, 2009 | 6− | 24 |
| August 30, 2009 | 6− | 20 |
| March 13, 2009 | 5− | 17 |
| June 24, 2009 | 5 | 16 |
GFZ Potsdam, Kp index (CC BY 4.0), doi:10.5880/Kp.0001.