Top 50 geomagnetic storms of 1999
On this page you will find an overview of the strongest geomagnetic storms of 1999 together with links to more information in our archive. The Kp-values on this page are the official, finalized Kp-values from the GFZ in Potsdam, Germany. The Ap-index provides a daily geomagnetic activity average. This page is updated daily. Times are in UTC.
| Ap | 00-03h | 03-06h | 06-09h | 09-12h | 12-15h | 15-18h | 18-21h | 21-00h | Kp max | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1999/10/22 | 91 | 7 | 8- | 8 | 5+ | 5- | 4+ | 6- | 3+ | 8 | View archive |
| 2 | 1999/09/22 | 50 | 3 | 2 | 2 | 3- | 5 | 4- | 6 | 8 | 8 | View archive |
| 3 | 1999/07/30 | 53 | 3- | 2 | 3- | 3+ | 5 | 5+ | 8- | 6+ | 8- | View archive |
| 4 | 1999/04/17 | 47 | 6 | 7+ | 5+ | 5 | 2+ | 2+ | 3- | 2- | 7+ | View archive |
| 5 | 1999/01/13 | 40 | 2+ | 2 | 1+ | 3+ | 4 | 5+ | 6- | 7 | 7 | View archive |
| 6 | 1999/02/18 | 80 | 5- | 6 | 7- | 7- | 7- | 5+ | 6 | 5 | 7- | View archive |
| 7 | 1999/11/13 | 43 | 4+ | 4+ | 4- | 3- | 5 | 5 | 6+ | 5+ | 6+ | View archive |
| 8 | 1999/03/10 | 34 | 5 | 6+ | 5- | 5 | 2+ | 3- | 3- | 2+ | 6+ | View archive |
| 9 | 1999/09/23 | 28 | 6+ | 6 | 3+ | 1+ | 1 | 2 | 2 | 2 | 6+ | View archive |
| 10 | 1999/09/13 | 46 | 6- | 6 | 5- | 4+ | 4+ | 5 | 5 | 4- | 6 | View archive |
| 11 | 1999/09/16 | 31 | 3+ | 6 | 5 | 4+ | 3+ | 4- | 3 | 3- | 6 | View archive |
| 12 | 1999/09/12 | 31 | 3- | 3+ | 2 | 5 | 3 | 4- | 6 | 5 | 6 | View archive |
| 13 | 1999/06/28 | 26 | 2+ | 6 | 6- | 3+ | 2+ | 2 | 2+ | 2+ | 6 | View archive |
| 14 | 1999/09/27 | 43 | 4+ | 4+ | 5- | 4+ | 5 | 6- | 5+ | 5- | 6- | View archive |
| 15 | 1999/03/01 | 41 | 6- | 5+ | 4- | 3 | 5 | 5- | 5 | 4+ | 6- | View archive |
| 16 | 1999/02/19 | 40 | 6- | 5+ | 5 | 4+ | 5+ | 4 | 4- | 3- | 6- | View archive |
| 17 | 1999/12/31 | 36 | 6- | 4+ | 4- | 4- | 4 | 4- | 5- | 5+ | 6- | View archive |
| 18 | 1999/08/20 | 36 | 3+ | 6- | 4 | 5 | 5 | 5- | 3 | 4- | 6- | View archive |
| 19 | 1999/10/10 | 33 | 3- | 4+ | 4+ | 5- | 5- | 6- | 4 | 3 | 6- | View archive |
| 20 | 1999/08/23 | 31 | 6- | 5- | 3+ | 3- | 4+ | 4 | 4 | 4 | 6- | View archive |
| 21 | 1999/08/24 | 29 | 4- | 4- | 4+ | 4 | 6- | 4 | 3+ | 3+ | 6- | View archive |
| 22 | 1999/03/29 | 28 | 3+ | 3 | 4+ | 4- | 6- | 4- | 4 | 4- | 6- | View archive |
| 23 | 1999/09/15 | 27 | 4- | 4- | 5 | 6- | 4- | 3- | 3 | 2- | 6- | View archive |
| 24 | 1999/12/13 | 26 | 4 | 5- | 6- | 4 | 4- | 3+ | 1+ | 0+ | 6- | View archive |
| 25 | 1999/03/02 | 22 | 6- | 4 | 3 | 2- | 3 | 3+ | 3- | 3- | 6- | View archive |
| 26 | 1999/10/12 | 46 | 5 | 5 | 4- | 5 | 5+ | 5+ | 5+ | 4+ | 5+ | View archive |
| 27 | 1999/10/23 | 32 | 4 | 5- | 3+ | 3- | 5+ | 5 | 4+ | 4 | 5+ | View archive |
| 28 | 1999/08/17 | 29 | 5- | 5- | 5+ | 3+ | 4+ | 3+ | 4- | 2+ | 5+ | View archive |
| 29 | 1999/08/16 | 29 | 2+ | 2 | 4- | 5- | 5+ | 5- | 5- | 3+ | 5+ | View archive |
| 30 | 1999/01/14 | 29 | 3- | 3- | 5 | 5+ | 4+ | 4 | 3 | 4+ | 5+ | View archive |
| 31 | 1999/07/31 | 28 | 5- | 5- | 4 | 1+ | 2 | 2+ | 5+ | 5- | 5+ | View archive |
| 32 | 1999/09/30 | 26 | 5- | 5+ | 4 | 4+ | 3+ | 3- | 3 | 2+ | 5+ | View archive |
| 33 | 1999/06/27 | 25 | 2 | 3- | 2+ | 4- | 5 | 4 | 5+ | 4- | 5+ | View archive |
| 34 | 1999/10/28 | 21 | 2+ | 2- | 3- | 2- | 4+ | 4 | 5+ | 3+ | 5+ | View archive |
| 35 | 1999/09/26 | 20 | 0 | 0 | 1- | 1 | 2 | 5 | 5- | 5+ | 5+ | View archive |
| 36 | 1999/02/28 | 17 | 0 | 1- | 2 | 1 | 3- | 4 | 4 | 5+ | 5+ | View archive |
| 37 | 1999/11/07 | 31 | 3+ | 4+ | 5- | 4+ | 5 | 5 | 3- | 3+ | 5 | View archive |
| 38 | 1999/10/15 | 31 | 5 | 5 | 4+ | 4 | 4- | 5- | 3+ | 3- | 5 | View archive |
| 39 | 1999/10/14 | 31 | 3+ | 4+ | 4- | 4- | 5- | 5 | 4+ | 4+ | 5 | View archive |
| 40 | 1999/12/04 | 30 | 4+ | 3 | 4 | 5 | 4+ | 5 | 4- | 3+ | 5 | View archive |
| 41 | 1999/03/04 | 30 | 3 | 4- | 5 | 4- | 4 | 5 | 5- | 4- | 5 | View archive |
| 42 | 1999/10/11 | 29 | 4+ | 3+ | 5- | 4- | 3+ | 5- | 3+ | 5 | 5 | View archive |
| 43 | 1999/08/18 | 28 | 4+ | 5- | 4+ | 3+ | 4 | 5 | 3 | 3 | 5 | View archive |
| 44 | 1999/05/18 | 27 | 4- | 4 | 4 | 4- | 4+ | 4 | 5 | 2+ | 5 | View archive |
| 45 | 1999/07/02 | 26 | 4- | 3+ | 5 | 4 | 2+ | 4 | 4 | 4+ | 5 | View archive |
| 46 | 1999/05/13 | 25 | 3+ | 5 | 5- | 3- | 5- | 4 | 2 | 3- | 5 | View archive |
| 47 | 1999/08/30 | 23 | 2- | 3- | 4+ | 5 | 3 | 4 | 4- | 4- | 5 | View archive |
| 48 | 1999/08/31 | 22 | 3 | 3+ | 3 | 3+ | 2+ | 3+ | 5 | 5- | 5 | View archive |
| 49 | 1999/11/24 | 21 | 3+ | 3+ | 4 | 5 | 3 | 3 | 3 | 2+ | 5 | View archive |
| 50 | 1999/01/23 | 21 | 2+ | 3 | 3 | 3+ | 2 | 4+ | 4 | 5 | 5 | View archive |
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