Geomagnetic Storms of 1963
41 geomagnetic storms of G1 or more began in 1963: 19 G1, 15 G2, 5 G3, 1 G4, 1 G5. The strongest began September 21, 1963 and reached Kp 9-, rank 40 of every storm since 1932.
By month
Every storm of 1963
Times are UT, when the first block at Kp 5 or more began.
| Began (UTC) | Level | Peak Kp | Hours | Highest daily Ap |
|---|---|---|---|---|
| Jan 13, 03:00 | G1 Minor | 5+ | 3 | 29 |
| Jan 14, 09:00 | G1 Minor | 5+ | 24 | 31 |
| Jan 30, 21:00 | G2 Moderate | 6- | 18 | 43 |
| Feb 9, 21:00 | G2 Moderate | 6- | 27 | 45 |
| Feb 13, 18:00 | G1 Minor | 5+ | 15 | 27 |
| Mar 7, 21:00 | G1 Minor | 5+ | 15 | 31 |
| Mar 10, 12:00 | G2 Moderate | 6+ | 9 | 46 |
| Apr 5, 00:00 | G2 Moderate | 6- | 6 | 32 |
| Apr 30, 18:00 | G2 Moderate | 6+ | 12 | 35 |
| May 13, 03:00 | G1 Minor | 5 | 3 | 22 |
| May 29, 03:00 | G2 Moderate | 6- | 3 | 21 |
| Jun 6, 21:00 | G3 Strong | 7 | 9 | 43 |
| Jun 18, 18:00 | G1 Minor | 5 | 3 | 21 |
| Jun 25, 21:00 | G2 Moderate | 6- | 12 | 26 |
| Jul 6, 03:00 | G2 Moderate | 6- | 3 | 20 |
| Jul 21, 12:00 | G1 Minor | 5+ | 6 | 26 |
| Jul 23, 21:00 | G1 Minor | 5+ | 9 | 30 |
| Jul 30, 06:00 | G1 Minor | 5 | 9 | 28 |
| Aug 18, 12:00 | G2 Moderate | 6+ | 3 | 26 |
| Aug 19, 18:00 | G3 Strong | 7 | 21 | 58 |
| Aug 21, 06:00 | G1 Minor | 5 | 6 | 27 |
| Aug 28, 18:00 | G1 Minor | 5+ | 3 | 26 |
| Sep 11, 18:00 | G1 Minor | 5 | 3 | 20 |
| Sep 14, 03:00 | G3 Strong | 7 | 21 | 82 |
| Sep 15, 15:00 | G1 Minor | 5+ | 9 | 36 |
| Sep 17, 06:00 | G2 Moderate | 6+ | 15 | 43 |
| Sep 21, 12:00 | G5 Extreme | 9- | 42 | 126 |
| Sep 24, 21:00 | G3 Strong | 7+ | 33 | 60 |
| Sep 27, 18:00 | G2 Moderate | 6+ | 27 | 48 |
| Oct 12, 12:00 | G2 Moderate | 6- | 9 | 39 |
| Oct 13, 21:00 | G1 Minor | 5 | 3 | 24 |
| Oct 24, 00:00 | G3 Strong | 7+ | 12 | 63 |
| Oct 25, 00:00 | G1 Minor | 5+ | 3 | 16 |
| Oct 29, 15:00 | G4 Severe | 8 | 12 | 74 |
| Nov 2, 15:00 | G1 Minor | 5 | 3 | 16 |
| Nov 7, 09:00 | G2 Moderate | 6 | 24 | 46 |
| Nov 9, 18:00 | G1 Minor | 5 | 9 | 33 |
| Nov 24, 21:00 | G1 Minor | 5 | 3 | 20 |
| Nov 30, 12:00 | G2 Moderate | 6- | 3 | 18 |
| Dec 3, 06:00 | G2 Moderate | 6- | 3 | 36 |
| Dec 4, 21:00 | G1 Minor | 5 | 3 | 25 |
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.