Geomagnetic Storms of 1994
59 geomagnetic storms of G1 or more began in 1994: 32 G1, 18 G2, 7 G3, 2 G4, 0 G5. The strongest began April 16, 1994 and reached Kp 8+, rank 118 of every storm since 1932.
By month
Every storm of 1994
Times are UT, when the first block at Kp 5 or more began.
| Began (UTC) | Level | Peak Kp | Hours | Highest daily Ap |
|---|---|---|---|---|
| Jan 11, 15:00 | G1 Minor | 5+ | 6 | 25 |
| Jan 14, 12:00 | G1 Minor | 5 | 3 | 26 |
| Jan 17, 03:00 | G1 Minor | 5 | 3 | 27 |
| Jan 18, 12:00 | G1 Minor | 5 | 3 | 25 |
| Feb 5, 09:00 | G2 Moderate | 6+ | 87 | 64 |
| Feb 9, 15:00 | G1 Minor | 5+ | 15 | 40 |
| Feb 11, 00:00 | G2 Moderate | 6- | 24 | 50 |
| Feb 13, 15:00 | G2 Moderate | 6+ | 6 | 40 |
| Feb 14, 15:00 | G2 Moderate | 6 | 9 | 38 |
| Feb 16, 00:00 | G1 Minor | 5 | 3 | 24 |
| Feb 21, 09:00 | G4 Severe | 8- | 24 | 95 |
| Mar 2, 21:00 | G1 Minor | 5+ | 12 | 23 |
| Mar 7, 00:00 | G3 Strong | 7 | 129 | 65 |
| Mar 13, 03:00 | G1 Minor | 5 | 3 | 27 |
| Mar 13, 21:00 | G1 Minor | 5 | 9 | 34 |
| Mar 15, 00:00 | G2 Moderate | 6- | 18 | 45 |
| Mar 16, 15:00 | G1 Minor | 5+ | 18 | 36 |
| Mar 21, 03:00 | G1 Minor | 5 | 24 | 28 |
| Apr 2, 12:00 | G3 Strong | 7+ | 57 | 93 |
| Apr 5, 12:00 | G2 Moderate | 6 | 69 | 48 |
| Apr 9, 00:00 | G2 Moderate | 6 | 27 | 52 |
| Apr 10, 18:00 | G2 Moderate | 6- | 30 | 46 |
| Apr 12, 18:00 | G1 Minor | 5 | 3 | 30 |
| Apr 13, 15:00 | G1 Minor | 5+ | 12 | 31 |
| Apr 16, 03:00 | G1 Minor | 5 | 3 | 32 |
| Apr 16, 18:00 | G4 Severe | 8+ | 18 | 100 |
| Apr 19, 00:00 | G1 Minor | 5 | 3 | 16 |
| May 1, 15:00 | G3 Strong | 7 | 15 | 50 |
| May 2, 18:00 | G3 Strong | 7- | 15 | 49 |
| May 5, 15:00 | G2 Moderate | 6- | 15 | 40 |
| May 6, 21:00 | G2 Moderate | 6 | 12 | 39 |
| May 8, 06:00 | G1 Minor | 5 | 15 | 37 |
| May 10, 06:00 | G1 Minor | 5+ | 3 | 33 |
| May 15, 06:00 | G2 Moderate | 6- | 6 | 36 |
| May 16, 15:00 | G1 Minor | 5 | 3 | 29 |
| May 28, 15:00 | G3 Strong | 7 | 63 | 51 |
| May 31, 18:00 | G1 Minor | 5 | 3 | 29 |
| Jun 3, 18:00 | G1 Minor | 5 | 3 | 23 |
| Jun 28, 21:00 | G2 Moderate | 6- | 3 | 18 |
| Jul 2, 03:00 | G1 Minor | 5 | 3 | 27 |
| Jul 14, 12:00 | G2 Moderate | 6- | 15 | 30 |
| Jul 15, 21:00 | G2 Moderate | 6 | 6 | 32 |
| Jul 27, 03:00 | G1 Minor | 5 | 3 | 13 |
| Aug 14, 06:00 | G1 Minor | 5 | 3 | 26 |
| Sep 7, 09:00 | G2 Moderate | 6 | 27 | 40 |
| Sep 9, 12:00 | G1 Minor | 5+ | 3 | 35 |
| Sep 25, 18:00 | G1 Minor | 5+ | 6 | 18 |
| Oct 2, 21:00 | G3 Strong | 7 | 24 | 88 |
| Oct 5, 09:00 | G1 Minor | 5+ | 6 | 40 |
| Oct 6, 21:00 | G1 Minor | 5 | 3 | 34 |
| Oct 7, 15:00 | G1 Minor | 5+ | 9 | 41 |
| Oct 22, 21:00 | G2 Moderate | 6+ | 18 | 53 |
| Oct 24, 03:00 | G1 Minor | 5+ | 15 | 33 |
| Oct 29, 09:00 | G3 Strong | 7 | 51 | 57 |
| Nov 4, 03:00 | G1 Minor | 5+ | 3 | 23 |
| Nov 6, 03:00 | G2 Moderate | 6- | 15 | 43 |
| Nov 20, 06:00 | G1 Minor | 5 | 3 | 24 |
| Nov 26, 09:00 | G2 Moderate | 6+ | 6 | 36 |
| Dec 6, 06:00 | G1 Minor | 5+ | 3 | 27 |
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.