Viewing archive of Friday, 28 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 |
|---|---|---|---|---|---|
| 148 -6 | 1 -2 | C1.68 | M4.11 | 9 | 1 |
Sunspot regions
Region 13376 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 | 140 | DAO | N22W0* | |
|
||||
Solar flares on this day | ||||
| C7.4 C6.7 C3.3 M4.1 | ||||
Region 13377 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 200 -20 | DSO | S08W74 | |
|
||||
Region 13379 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -6 | 180 -20 | HSX | N14W50 | |
|
||||
Region 13380 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 14 7 | 200 90 | CAI | S12W02 | |
|
||||
Solar flares on this day | ||||
| C3.8 | ||||
Region 13382 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | N19W46 | |
|
||||
Region 13384 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -1 | 10 -10 | AXX | S15E15 | |
|
||||
Region 13385 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 20 | HRX | S15W49 | |
|
||||
Region 13386 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 18 7 | 360 180 | DKI | N12E33 | |
|
||||
Solar flares on this day | ||||
| C2.9 | ||||
Region 13387 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 2 | 120 60 | CAO | N20E52 | |
|
||||
Solar flares on this day | ||||
| C2.2 | ||||
Region 13388 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 60 30 | CSO | S23E48 | |
|
||||
Region 13389 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 40 20 | HSX | S09E58 | |
|
||||
Region 13390 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 20 | HRX | S18E70 | |
|
||||
Solar flares on this day | ||||
| C3.0 C7.7 C5.9 | ||||
All times in UTC
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/25 | M2.4 |
| Last geomagnetic storm | 2026/02/22 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (5%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| March 2026 | 83.5 -29.1 |
| Last 30 days | 67.7 -52.1 |