| Número de manchas solares |
Tamaño | Clase Magn. | Clase Mancha | Ubicación | |
|---|---|---|---|---|---|
| 08/09/1999 | 1 | 20 | HSX | N12E79 | |
| 09/09/1999 | 1 | 50 | HAX | N11E64 | |
| 10/09/1999 | 1 | 70 | HSX | N12E51 | |
| 11/09/1999 | 6 | 50 | CSO | N13E37 | |
| 12/09/1999 | 5 | 50 | CSO | N13E23 | |
| 13/09/1999 | 2 | 50 | DSO | N13E11 | |
| 14/09/1999 | 5 | 40 | HSX | N12W02 | |
| 15/09/1999 | 3 | 30 | CSO | N12W16 | |
| 16/09/1999 | 2 | 30 | CSO | N13W29 | |
| 17/09/1999 | 1 | 30 | HSX | N13W44 | |
| 18/09/1999 | 1 | 20 | HSX | N12W56 | |
| 19/09/1999 | 1 | 30 | HSX | N12W71 | |
| 20/09/1999 | 1 | 0 | AXX | N12W83 |
| C |
|---|
| 1 |
| Inicio | Máximo | Fin | ||||
|---|---|---|---|---|---|---|
| 1 | C3.74 | 13/09/1999 | 16:30 | 16:45 | 17:04 |
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| Último evento clase X | 03/02/2026 | X1.5 |
| Último evento clase M | 03/02/2026 | M2.5 |
| Últimas tormentas geomagnéticas | 28/01/2026 | Kp5+ (G1) |
| Días sin manchas | |
|---|---|
| Último día sin manchas | 08/06/2022 |
| Promedio de manchas solares mensuales | |
|---|---|
| diciembre 2025 | 124 +32.2 |
| febrero 2026 | 114 -10 |
| Last 30 days | 118.1 +6.2 |