Viewing archive of Monday, 17 July 2023 - 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 | M |
|---|---|---|---|---|---|
| 149 50 | 3 3 | C1.51 | M5.58 | 18 | 2 |
Sunspot regions
Region 13363 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 10 1 | 700 -20 | DKO | S22W74 | |
|
||||
Solar flares on this day | ||||
| C2.5 C2.2 C4.4 C4.1 C4.1 C7.4 M2.7 | ||||
Region 13371 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 20 | HRX | S15W22 | |
|
||||
Region 13372 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 21 3 | 700 | FHO | N23E01 | |
|
||||
Solar flares on this day | ||||
| C3.9 C6.5 | ||||
Region 13373 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 20 | 450 210 | EKC | N07E25 | |
|
||||
Solar flares on this day | ||||
| C2.8 C2.9 C3.7 C4.3 C3.7 C2.5 C3.3 | ||||
Region 13374 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 30 10 | HRX | S16E27 | |
|
||||
Region 13375 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 | 20 | CRO | N12W53 | |
|
||||
Region 13376 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 11 | 30 | DRO | N24E43 | |
|
||||
Region 13377 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 30 | DSO | S09E71 | |
|
||||
Solar flares on this day | ||||
| C3.2 | ||||
All times in UTC
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Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/12 | M1.1 |
| Last geomagnetic storm | 2025/12/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 131.8 +40 |
| Last 30 days | 108.3 +14.5 |