Viewing archive of Tuesday, 21 September 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 |
|---|---|---|---|---|---|
| 82 4 | 0 | B8.14 | M1.36 | 3 | 1 |
Sunspot regions
Region 8695 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | N21W56 | |
Region 8699 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -5 | 60 -110 | HSX | N24W88 | |
Solar flares on this day | ||||
| C7.43 | ||||
Region 8700 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 18 -8 | 50 -20 | DSO | N12W19 | |
Region 8704 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 -1 | 110 -70 | ESO | S22E28 | |
Solar flares on this day | ||||
| C4 | ||||
Region 8706 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 1 | 120 40 | CSO | N20E66 | |
Solar flares on this day | ||||
| M1.36 | ||||
Latest news
Monday, 22 April 2024
Lot's of sunspots! Big chance for major flare activity?
Saturday, 23 March 2024
X1.1 solar flare with earth-directed CME
Wednesday, 20 March 2024
Sunspot region 3615, G1 watch
Latest forum messages
Unspecified geomagnetic activity 981ionosphere D detection 15CME 2024-MAY-01 south of AR3654 C5.8 5AR3663 17Minor glitch with utc timestamp 3
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 | 2024/03/28 | X1.1 |
| Last M-flare | 2024/05/02 | M1.0 |
| Last geomagnetic storm | 2024/04/26 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| Last 30 days | 146.6 +47.6 |