Geomagnetic Storms of 2012
30 geomagnetic storms of G1 or more began in 2012: 14 G1, 10 G2, 5 G3, 1 G4, 0 G5. The strongest began March 9, 2012 and reached Kp 8, rank 177 of every storm since 1932.
By month
Every storm of 2012
Times are UT, when the first block at Kp 5 or more began.
| Began (UTC) | Level | Peak Kp | Hours | Highest daily Ap |
|---|---|---|---|---|
| Jan 23, 00:00 | G1 Minor | 5 | 3 | 12 |
| Feb 15, 03:00 | G1 Minor | 5+ | 3 | 22 |
| Feb 19, 00:00 | G2 Moderate | 6- | 6 | 21 |
| Feb 27, 18:00 | G1 Minor | 5+ | 15 | 19 |
| Mar 7, 06:00 | G2 Moderate | 6 | 12 | 48 |
| Mar 8, 09:00 | G1 Minor | 5 | 3 | 25 |
| Mar 9, 03:00 | G4 Severe | 8 | 15 | 87 |
| Mar 12, 09:00 | G2 Moderate | 6+ | 6 | 32 |
| Mar 15, 15:00 | G2 Moderate | 6+ | 9 | 36 |
| Mar 16, 15:00 | G1 Minor | 5 | 3 | 27 |
| Mar 17, 21:00 | G1 Minor | 5 | 3 | 27 |
| Mar 27, 21:00 | G1 Minor | 5 | 3 | 17 |
| Apr 13, 03:00 | G1 Minor | 5 | 3 | 20 |
| Apr 23, 18:00 | G3 Strong | 7- | 12 | 41 |
| Apr 24, 21:00 | G1 Minor | 5 | 3 | 41 |
| Apr 25, 18:00 | G1 Minor | 5+ | 3 | 27 |
| Jun 3, 12:00 | G2 Moderate | 6- | 6 | 24 |
| Jun 11, 21:00 | G1 Minor | 5+ | 6 | 17 |
| Jun 16, 21:00 | G2 Moderate | 6+ | 18 | 43 |
| Jun 18, 03:00 | G1 Minor | 5+ | 3 | 17 |
| Jul 9, 12:00 | G3 Strong | 7- | 6 | 42 |
| Jul 14, 18:00 | G3 Strong | 7 | 45 | 78 |
| Aug 2, 15:00 | G1 Minor | 5 | 3 | 18 |
| Sep 3, 12:00 | G2 Moderate | 6- | 3 | 31 |
| Sep 5, 00:00 | G2 Moderate | 6- | 9 | 32 |
| Oct 1, 00:00 | G3 Strong | 7- | 6 | 32 |
| Oct 8, 06:00 | G3 Strong | 7- | 27 | 46 |
| Oct 9, 21:00 | G1 Minor | 5 | 3 | 46 |
| Oct 13, 03:00 | G2 Moderate | 6- | 15 | 47 |
| Nov 14, 00:00 | G2 Moderate | 6+ | 9 | 37 |
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 2026-09-24.