Viewing archive of Saturday, 28 February 2015 - Sunspot regions
It appears that the image of the visible solar disk for this day in history is missing.
| Sunspot number | New regions | Background flux | Maximum flux | C |
|---|---|---|---|---|
| 70 12 | 0 -1 | B6.29 | C8.08 | 8 |
Sunspot regions
Region 12290 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -2 | 30 -20 | CRO | N19W50 | |
|
||||
Solar flares on this day | ||||
| C1.52 C3.16 C2.12 | ||||
Region 12293 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 10 8 | 90 80 | DAC | N06E29 | |
|
||||
Solar flares on this day | ||||
| C1.34 | ||||
Region 12294 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 15 | 80 | DAI | S14W14 | |
|
||||
Solar flares on this day | ||||
| C3.61 C1.65 C8.07 | ||||
All times in UTC
Latest news
Tuesday, 17 March 2026
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CME impact! S4 solar radiation storm
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/18 | M2.7 |
| Last geomagnetic storm | 2026/03/23 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 77.7 -0.5 |
| Last 30 days | 72.3 -15.7 |