Geomagnetic Storms of 1979
47 geomagnetic storms of G1 or more began in 1979: 20 G1, 14 G2, 10 G3, 3 G4, 0 G5. The strongest began April 25, 1979 and reached Kp 8, rank 156 of every storm since 1932.
By month
Every storm of 1979
Times are UT, when the first block at Kp 5 or more began.
| Began (UTC) | Level | Peak Kp | Hours | Highest daily Ap |
|---|---|---|---|---|
| Jan 4, 03:00 | G2 Moderate | 6- | 27 | 45 |
| Jan 7, 15:00 | G2 Moderate | 6+ | 6 | 32 |
| Jan 19, 03:00 | G1 Minor | 5 | 3 | 19 |
| Jan 22, 21:00 | G1 Minor | 5 | 3 | 14 |
| Jan 23, 18:00 | G2 Moderate | 6- | 9 | 27 |
| Jan 25, 00:00 | G2 Moderate | 6- | 6 | 34 |
| Jan 26, 21:00 | G1 Minor | 5+ | 9 | 28 |
| Feb 21, 03:00 | G3 Strong | 7- | 51 | 59 |
| Feb 27, 00:00 | G2 Moderate | 6- | 3 | 24 |
| Mar 4, 21:00 | G1 Minor | 5 | 3 | 27 |
| Mar 10, 00:00 | G1 Minor | 5 | 3 | 55 |
| Mar 10, 18:00 | G3 Strong | 7 | 9 | 55 |
| Mar 17, 06:00 | G2 Moderate | 6- | 3 | 21 |
| Mar 22, 09:00 | G3 Strong | 7- | 9 | 45 |
| Mar 28, 09:00 | G3 Strong | 7- | 42 | 68 |
| Mar 31, 21:00 | G1 Minor | 5+ | 3 | 19 |
| Apr 1, 21:00 | G2 Moderate | 6+ | 9 | 36 |
| Apr 3, 15:00 | G4 Severe | 8 | 21 | 54 |
| Apr 5, 09:00 | G3 Strong | 7- | 9 | 52 |
| Apr 21, 21:00 | G2 Moderate | 6- | 33 | 45 |
| Apr 25, 00:00 | G4 Severe | 8 | 24 | 126 |
| Apr 27, 15:00 | G1 Minor | 5+ | 18 | 31 |
| Apr 29, 03:00 | G2 Moderate | 6- | 24 | 47 |
| May 22, 15:00 | G1 Minor | 5+ | 9 | 36 |
| May 24, 21:00 | G1 Minor | 5+ | 9 | 34 |
| May 25, 18:00 | G1 Minor | 5 | 3 | 34 |
| May 29, 18:00 | G3 Strong | 7 | 6 | 30 |
| Jun 6, 18:00 | G3 Strong | 7 | 12 | 34 |
| Jun 22, 18:00 | G1 Minor | 5+ | 3 | 24 |
| Jun 26, 12:00 | G1 Minor | 5 | 3 | 20 |
| Jul 6, 18:00 | G2 Moderate | 6 | 3 | 22 |
| Jul 7, 12:00 | G1 Minor | 5+ | 6 | 27 |
| Jul 26, 21:00 | G2 Moderate | 6- | 6 | 23 |
| Jul 29, 18:00 | G1 Minor | 5 | 3 | 24 |
| Aug 12, 21:00 | G3 Strong | 7+ | 27 | 77 |
| Aug 18, 21:00 | G2 Moderate | 6- | 15 | 35 |
| Aug 20, 15:00 | G3 Strong | 7 | 12 | 43 |
| Aug 29, 06:00 | G4 Severe | 8- | 18 | 77 |
| Sep 18, 00:00 | G3 Strong | 7 | 18 | 64 |
| Sep 20, 12:00 | G1 Minor | 5+ | 18 | 23 |
| Oct 6, 09:00 | G2 Moderate | 6 | 9 | 36 |
| Oct 7, 12:00 | G2 Moderate | 6- | 15 | 37 |
| Nov 13, 15:00 | G1 Minor | 5+ | 12 | 35 |
| Nov 25, 03:00 | G1 Minor | 5 | 3 | 15 |
| Nov 30, 06:00 | G1 Minor | 5 | 3 | 15 |
| Dec 29, 03:00 | G1 Minor | 5 | 3 | 32 |
| Dec 29, 18:00 | G1 Minor | 5 | 3 | 32 |
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.