Viewing archive of Sunday, 17 August 2025 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux | C |
|---|---|---|---|---|
| 53 -70 | 0 | B6.76 | C3.69 | 9 |
Sunspot regions
Region 14169 |
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|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 30 | HSX | N22W98 | |
|
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Region 14171 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 -20 | HRX | N19W78 | |
|
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Region 14172 |
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|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 180 | DAI | N08W0* | |
|
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Solar flares on this day | ||||
| C1.5 C2.0 C3.7 C1.0 C1.7 C1.4 C1.0 | ||||
Region 14175 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | N12W62 | |
|
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Region 14179 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -6 | 0 -20 | BXO | S12W24 | |
|
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Region 14180 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 9 2 | 40 20 | CAI | S03W11 | |
|
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Solar flares on this day | ||||
| C1.8 C3.3 | ||||
Region 14182 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -4 | 10 -20 | HSX | N08E16 | |
|
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Region 14185 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -1 | 10 | AXX | N17W77 | |
|
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Region 14186 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -4 | 40 -20 | DSO | N07W77 | |
|
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All times in UTC
Latest news
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
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Monday, 19 January 2026
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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 |