Viewing archive of Monday, 15 February 1999 - 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 | M |
|---|---|---|---|---|---|
| 167 -44 | 0 | C2 | M1.05 | 7 | 1 |
Sunspot regions
Region 8456 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 14 -14 | 30 -30 | CSO | N23W22 | |
Region 8457 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 32 -4 | 660 | EKI | N15W03 | |
Solar flares on this day | ||||
| C1.94 C2.44 C6.03 | ||||
Region 8458 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 30 14 | 590 30 | DKO | S22E03 | |
Region 8459 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 | 70 | DRO | S30W30 | |
Region 8460 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 9 5 | 30 | CSO | S17E17 | |
Region 8462 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 21 5 | 80 30 | DAO | N20E07 | |
Solar flares on this day | ||||
| M1.05 C5.84 C3.91 | ||||
Region 8463 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 60 -10 | HSX | S16E33 | |
Region 8464 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 7 3 | 90 -70 | CSO | N20E42 | |
Solar flares on this day | ||||
| C3.44 | ||||
Region 8465 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -1 | 0 | AXX | S32W76 | |
All times in UTC
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| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/03/28 | M1.3 |
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| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| April 2026 | 130 +51.8 |
| Last 30 days | 91.6 +20.3 |
This day in history*
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