Viewing archive of Thursday, 18 September 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 |
|---|---|---|---|---|
| 119 | 0 | B8.69 | C3.63 | 6 |
Sunspot regions
Region 14216 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 13 -4 | 180 -20 | CSI | N10W17 | |
|
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Region 14217 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 -6 | 200 | EAO | S17E21 | |
|
||||
Solar flares on this day | ||||
| C2.8 | ||||
Region 14219 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -1 | 10 | AXX | N25W56 | |
|
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Region 14220 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 20 2 | 250 170 | DKI | S18W15 | |
|
||||
Solar flares on this day | ||||
| C1.7 C3.6 C1.3 C1.9 | ||||
Region 14221 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -3 | 70 -40 | CAO | N04E15 | |
|
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Region 14223 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 | 50 10 | CAO | S16E36 | |
|
||||
Solar flares on this day | ||||
| C2.9 | ||||
Region 14225 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 140 20 | HSX | N10E52 | |
|
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Space weather facts
| Last X-flare | 2026/04/24 | X2.5 |
| Last M-flare | 2026/05/22 | M2.3 |
| Last geomagnetic storm | 2026/05/16 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2026 | 79.3 -6.6 |
| May 2026 | 87.5 +8.2 |
| Last 30 days | 98 +7.5 |
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