Geomagnetic Storms of 2008
10 geomagnetic storms of G1 or more began in 2008: 6 G1, 4 G2, 0 G3, 0 G4, 0 G5. The strongest began October 11, 2008 and reached Kp 6+, rank 1,009 of every storm since 1932.
By month
Every storm of 2008
Times are UT, when the first block at Kp 5 or more began.
| Began (UTC) | Level | Peak Kp | Hours | Highest daily Ap |
|---|---|---|---|---|
| Feb 29, 15:00 | G1 Minor | 5+ | 12 | 31 |
| Mar 9, 03:00 | G2 Moderate | 6- | 6 | 30 |
| Mar 26, 18:00 | G1 Minor | 5 | 12 | 36 |
| Mar 27, 18:00 | G1 Minor | 5 | 6 | 36 |
| Apr 5, 15:00 | G1 Minor | 5 | 3 | 18 |
| Apr 23, 06:00 | G1 Minor | 5+ | 3 | 27 |
| Jun 14, 21:00 | G2 Moderate | 6- | 3 | 18 |
| Aug 9, 21:00 | G1 Minor | 5+ | 3 | 21 |
| Sep 4, 00:00 | G2 Moderate | 6 | 6 | 31 |
| Oct 11, 12:00 | G2 Moderate | 6+ | 9 | 34 |
More
Sources
Kp and ap from GFZ Helmholtz Centre for Geosciences, Geomagnetic Observatory Niemegk, licensed CC BY 4.0: Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O. and Morschhauser, A., 2021, The geomagnetic Kp index and derived indices of geomagnetic activity, Space Weather, doi:10.1029/2020SW002641; data doi:10.5880/Kp.0001. Storms, levels and aurora reach worked out by WeatherOverTime from those values and NOAA’s space weather scales. Definitive through August 31, 2026; later values are preliminary. Rebuilt 2026-09-25.