Geomagnetic Storms of 1976
43 geomagnetic storms of G1 or more began in 1976: 27 G1, 11 G2, 2 G3, 3 G4, 0 G5. The strongest began May 2, 1976 and reached Kp 8+, rank 103 of every storm since 1932.
By month
Every storm of 1976
Times are UT, when the first block at Kp 5 or more began.
| Began (UTC) | Level | Peak Kp | Hours | Highest daily Ap |
|---|---|---|---|---|
| Jan 10, 15:00 | G3 Strong | 7+ | 15 | 47 |
| Jan 11, 21:00 | G1 Minor | 5 | 3 | 41 |
| Jan 31, 12:00 | G1 Minor | 5+ | 12 | 29 |
| Feb 7, 09:00 | G1 Minor | 5+ | 3 | 22 |
| Feb 8, 15:00 | G1 Minor | 5+ | 3 | 30 |
| Feb 10, 18:00 | G1 Minor | 5 | 3 | 25 |
| Feb 13, 00:00 | G1 Minor | 5 | 3 | 22 |
| Feb 27, 12:00 | G1 Minor | 5+ | 6 | 29 |
| Feb 29, 00:00 | G2 Moderate | 6 | 6 | 35 |
| Feb 29, 21:00 | G1 Minor | 5 | 3 | 35 |
| Mar 2, 15:00 | G1 Minor | 5 | 9 | 33 |
| Mar 5, 21:00 | G1 Minor | 5 | 3 | 15 |
| Mar 6, 15:00 | G2 Moderate | 6 | 9 | 33 |
| Mar 7, 15:00 | G2 Moderate | 6 | 18 | 43 |
| Mar 9, 03:00 | G1 Minor | 5 | 3 | 37 |
| Mar 9, 18:00 | G1 Minor | 5+ | 12 | 37 |
| Mar 10, 21:00 | G1 Minor | 5 | 3 | 33 |
| Mar 26, 03:00 | G4 Severe | 8 | 24 | 145 |
| Mar 27, 18:00 | G1 Minor | 5 | 3 | 35 |
| Mar 29, 03:00 | G1 Minor | 5 | 3 | 16 |
| Apr 1, 00:00 | G4 Severe | 8+ | 15 | 118 |
| Apr 3, 03:00 | G2 Moderate | 6+ | 24 | 44 |
| Apr 7, 12:00 | G1 Minor | 5 | 3 | 28 |
| May 2, 12:00 | G4 Severe | 8+ | 27 | 97 |
| May 29, 18:00 | G1 Minor | 5+ | 6 | 22 |
| Jun 4, 03:00 | G1 Minor | 5+ | 3 | 20 |
| Jun 11, 03:00 | G1 Minor | 5+ | 3 | 27 |
| Jun 24, 18:00 | G1 Minor | 5 | 3 | 17 |
| Jun 30, 09:00 | G3 Strong | 7- | 3 | 29 |
| Jul 15, 18:00 | G2 Moderate | 6- | 3 | 19 |
| Aug 23, 15:00 | G2 Moderate | 6- | 21 | 30 |
| Sep 2, 06:00 | G1 Minor | 5 | 3 | 24 |
| Sep 18, 03:00 | G2 Moderate | 6 | 9 | 33 |
| Sep 20, 00:00 | G2 Moderate | 6 | 24 | 51 |
| Oct 2, 03:00 | G1 Minor | 5+ | 3 | 21 |
| Oct 15, 12:00 | G2 Moderate | 6- | 15 | 33 |
| Oct 17, 06:00 | G1 Minor | 5+ | 9 | 31 |
| Oct 30, 21:00 | G1 Minor | 5+ | 18 | 34 |
| Nov 11, 15:00 | G1 Minor | 5+ | 12 | 24 |
| Nov 13, 06:00 | G1 Minor | 5 | 3 | 31 |
| Dec 8, 09:00 | G1 Minor | 5 | 6 | 23 |
| Dec 18, 03:00 | G2 Moderate | 6+ | 3 | 28 |
| Dec 29, 00:00 | G2 Moderate | 6+ | 12 | 45 |
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 2026-09-26.