Geomagnetic Storms of 1957
66 geomagnetic storms of G1 or more began in 1957: 24 G1, 19 G2, 12 G3, 5 G4, 6 G5. The strongest began September 4, 1957 and reached Kp 9, rank 16 of every storm since 1932.
By month
Every storm of 1957
Times are UT, when the first block at Kp 5 or more began.
| Began (UTC) | Level | Peak Kp | Hours | Highest daily Ap |
|---|---|---|---|---|
| Jan 2, 09:00 | G1 Minor | 5+ | 15 | 25 |
| Jan 10, 06:00 | G1 Minor | 5 | 3 | 31 |
| Jan 21, 15:00 | G5 Extreme | 9- | 18 | 82 |
| Jan 23, 09:00 | G1 Minor | 5 | 3 | 26 |
| Jan 24, 18:00 | G1 Minor | 5+ | 9 | 27 |
| Jan 29, 12:00 | G2 Moderate | 6- | 21 | 36 |
| Feb 4, 12:00 | G2 Moderate | 6 | 27 | 39 |
| Feb 13, 09:00 | G2 Moderate | 6+ | 12 | 43 |
| Feb 21, 06:00 | G1 Minor | 5+ | 3 | 35 |
| Feb 21, 21:00 | G1 Minor | 5 | 3 | 35 |
| Feb 23, 18:00 | G3 Strong | 7 | 18 | 62 |
| Mar 2, 00:00 | G4 Severe | 8+ | 33 | 132 |
| Mar 10, 09:00 | G3 Strong | 7 | 15 | 73 |
| Mar 16, 00:00 | G1 Minor | 5 | 3 | 37 |
| Mar 16, 18:00 | G2 Moderate | 6 | 6 | 37 |
| Mar 21, 21:00 | G1 Minor | 5 | 3 | 20 |
| Mar 25, 03:00 | G2 Moderate | 6 | 3 | 31 |
| Mar 27, 18:00 | G3 Strong | 7 | 18 | 58 |
| Mar 29, 03:00 | G4 Severe | 8- | 24 | 77 |
| Apr 3, 21:00 | G1 Minor | 5 | 3 | 20 |
| Apr 5, 09:00 | G2 Moderate | 6- | 21 | 37 |
| Apr 10, 00:00 | G3 Strong | 7- | 18 | 58 |
| Apr 15, 21:00 | G2 Moderate | 6- | 3 | 18 |
| Apr 17, 12:00 | G4 Severe | 8- | 15 | 55 |
| Apr 18, 15:00 | G3 Strong | 7- | 27 | 61 |
| Apr 27, 00:00 | G1 Minor | 5 | 3 | 20 |
| May 26, 09:00 | G1 Minor | 5 | 3 | 28 |
| May 30, 09:00 | G1 Minor | 5+ | 3 | 28 |
| Jun 3, 18:00 | G2 Moderate | 6- | 12 | 38 |
| Jun 4, 21:00 | G2 Moderate | 6- | 6 | 38 |
| Jun 5, 21:00 | G1 Minor | 5+ | 9 | 33 |
| Jun 6, 21:00 | G1 Minor | 5 | 3 | 33 |
| Jun 15, 15:00 | G1 Minor | 5 | 3 | 19 |
| Jun 19, 12:00 | G1 Minor | 5+ | 3 | 26 |
| Jun 25, 09:00 | G3 Strong | 7 | 39 | 84 |
| Jun 30, 03:00 | G4 Severe | 8+ | 45 | 150 |
| Jul 2, 12:00 | G4 Severe | 8 | 27 | 55 |
| Jul 4, 21:00 | G3 Strong | 7+ | 27 | 56 |
| Jul 22, 18:00 | G2 Moderate | 6- | 3 | 26 |
| Aug 3, 15:00 | G2 Moderate | 6+ | 12 | 27 |
| Aug 6, 06:00 | G2 Moderate | 6- | 3 | 31 |
| Aug 13, 03:00 | G2 Moderate | 6- | 6 | 33 |
| Aug 21, 03:00 | G1 Minor | 5+ | 3 | 19 |
| Aug 29, 18:00 | G3 Strong | 7- | 12 | 38 |
| Aug 31, 15:00 | G3 Strong | 7 | 15 | 37 |
| Sep 2, 03:00 | G5 Extreme | 9- | 42 | 135 |
| Sep 4, 12:00 | G5 Extreme | 9 | 36 | 145 |
| Sep 6, 12:00 | G2 Moderate | 6- | 6 | 36 |
| Sep 13, 00:00 | G5 Extreme | 9- | 18 | 160 |
| Sep 14, 06:00 | G2 Moderate | 6+ | 9 | 38 |
| Sep 21, 09:00 | G5 Extreme | 9- | 78 | 164 |
| Sep 29, 03:00 | G5 Extreme | 9- | 39 | 139 |
| Oct 13, 00:00 | G1 Minor | 5+ | 6 | 26 |
| Oct 14, 03:00 | G2 Moderate | 6+ | 21 | 51 |
| Oct 21, 21:00 | G3 Strong | 7- | 3 | 28 |
| Oct 23, 00:00 | G1 Minor | 5 | 3 | 20 |
| Nov 6, 18:00 | G3 Strong | 7 | 9 | 31 |
| Nov 10, 00:00 | G1 Minor | 5 | 3 | 26 |
| Nov 25, 06:00 | G1 Minor | 5+ | 3 | 30 |
| Nov 26, 00:00 | G3 Strong | 7- | 36 | 64 |
| Nov 28, 06:00 | G1 Minor | 5 | 3 | 28 |
| Dec 1, 03:00 | G2 Moderate | 6- | 3 | 29 |
| Dec 11, 03:00 | G2 Moderate | 6- | 6 | 41 |
| Dec 11, 21:00 | G1 Minor | 5+ | 3 | 41 |
| Dec 13, 09:00 | G1 Minor | 5 | 3 | 22 |
| Dec 31, 03:00 | G2 Moderate | 6+ | 42 | 53 |
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.