Viewing archive of Wednesday, 17 March 1999 - 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 |
|---|---|---|---|---|---|
| 131 -3 | 1 | B7.14 | M4.71 | 12 | 3 |
Sunspot regions
Region 8484 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 -1 | 40 | CSO | S23W21 | |
Region 8485 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 50 -8 | 610 50 | FKI | N23W38 | |
Solar flares on this day | ||||
| C1.6 C1.49 C1.93 M4.71 C3.24 C3.71 C2.66 M1.71 C1.44 | ||||
Region 8487 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 22 4 | 180 -20 | ESI | N17W01 | |
Region 8488 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 20 20 | CSO | S26E09 | |
Region 8489 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 50 | CRO | N13W27 | |
All times in UTC
Latest news
Wednesday, 15 May 2024
More X-flares!
Tuesday, 14 May 2024
X8.7 solar flare
Monday, 13 May 2024
M6.6 solar flare with earth-directed CME
Latest forum messages
Incoming Active Regions 358AR3685 27Unproven theories 454Dog bone asteroids 14What makes AR3684 magnetically distinct from AR3685? 1
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2024/05/15 | X2.9 |
| Last M-flare | 2024/05/16 | M1.0 |
| Last geomagnetic storm | 2024/05/16 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| May 2024 | 156.6 +20.1 |
| Last 30 days | 177 +70.8 |