| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2001/09/04 | 2 | 40 | DSO | S17E57 | |
| 2001/09/05 | 10 | 150 | DAO | S17E45 | |
| 2001/09/06 | 19 | 210 | DAO | S17E32 | |
| 2001/09/07 | 25 | 360 | EKI | S17E19 | |
| 2001/09/08 | 33 | 270 | EKI | S18E05 | |
| 2001/09/09 | 30 | 220 | EAI | S18W07 | |
| 2001/09/10 | 33 | 210 | EAO | S18W22 | |
| 2001/09/11 | 18 | 210 | DAO | S18W36 | |
| 2001/09/12 | 3 | 150 | CAO | S19W50 | |
| 2001/09/13 | 2 | 130 | HSX | S17W64 | |
| 2001/09/14 | 1 | 90 | HAX | S17W79 |
| C | M |
|---|---|
| 2 | 4 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M2.59 | 2001/09/04 | 20:12 | 20:17 | 20:22 | |
| 2 | M1.89 | 2001/09/05 | 19:03 | 19:13 | 19:22 | |
| 3 | M1.29 | 2001/09/04 | 15:12 | 15:53 | 16:30 | |
| 4 | M1.07 | 2001/09/04 | 17:20 | 17:24 | 17:28 | |
| 5 | C5.6 | 2001/09/04 | 11:48 | 11:56 | 12:15 | |
| 6 | C4.77 | 2001/09/08 | 15:26 | 15:32 | 15:44 |
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| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/16 | M2.4 |
| Last geomagnetic storm | 2026/02/22 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 1 day |
| 2026 | 1 day (2%) |
| Current stretch | 2 days |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 86.1 -26.5 |
| Last 30 days | 94.1 -27.9 |