Viewing archive of Tuesday, 16 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 |
|---|---|---|---|---|
| 130 20 | 4 1 | B8.57 | C3.81 | 6 |
Sunspot regions
Region 14213 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 | 90 | DAO | S14W0* | |
|
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Region 14216 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 -3 | 190 -20 | CAI | S10E10 | |
|
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Region 14217 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 2 | 180 -20 | EAO | N16E51 | |
|
||||
Solar flares on this day | ||||
| C1.8 C2.5 | ||||
Region 14218 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -2 | 40 -20 | DSO | S15W0* | |
|
||||
Region 14219 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -3 | 10 -10 | BXO | S26W30 | |
|
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Region 14220 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 7 3 | 20 10 | CRO | N18E13 | |
|
||||
Solar flares on this day | ||||
| C3.5 | ||||
Region 14221 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 50 30 | CSO | S05E43 | |
|
||||
Region 14222 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 10 | AXX | N13E22 | |
|
||||
Region 14223 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 20 | CRO | S17E63 | |
|
||||
Solar flares on this day | ||||
| C1.7 C1.8 | ||||
Region 14224 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 | 10 | BXO | S09E44 | |
|
||||
Region 14225 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 50 | HSX | N10E81 | |
|
||||
All times in UTC
Latest news
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Latest forum messages
AR4366 411Do the high-resolution sunspot counts point to more complex sunspots? 42Space Weather Memes 781Incoming & Unnumbered Active Regions 141Current Farside Activity 350
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Space weather facts
| Last X-flare | 2026/02/02 | X2.9 |
| Last M-flare | 2026/02/01 | M1.3 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| Last 30 days | 119 +4.2 |