Sunspot region AR8340
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1998/09/18 | 1 | 150 | HHX | N20E76 | |
| 1998/09/19 | 8 | 360 | DKO | N22E64 | |
| 1998/09/20 | 12 | 470 | CKO | N19E50 | |
| 1998/09/21 | 11 | 490 | DKO | N19E38 | |
| 1998/09/22 | 21 | 540 | DKO | N19E25 | |
| 1998/09/23 | 28 | 380 | DAI | N20E11 | |
| 1998/09/24 | 31 | 460 | EKO | N20W02 | |
| 1998/09/25 | 25 | 520 | DKO | N20W15 | |
| 1998/09/26 | 18 | 390 | DKI | N20W27 | |
| 1998/09/27 | 18 | 350 | CKI | N21W40 | |
| 1998/09/28 | 8 | 300 | CKO | N19W54 | |
| 1998/09/29 | 7 | 320 | CHO | N20W68 | |
| 1998/09/30 | 1 | 230 | HSX | N19W82 | |
| 1998/10/01 | 1 | 100 | HSX | N19W93 |
| B | C | M |
|---|---|---|
| 2 | 12 | 2 |
The top 10 solar flares from sunspot region 8340
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M9.96 | 1998/09/23 | 06:40 | 07:13 | 07:31 | |
| 2 | M4.1 | 1998/09/30 | 13:08 | 13:50 | 14:48 | |
| 3 | C8.81 | 1998/09/29 | 01:54 | 02:02 | 02:09 | |
| 4 | C8.59 | 1998/09/27 | 23:37 | 23:42 | 23:49 | |
| 5 | C7.54 | 1998/09/27 | 16:23 | 16:42 | 16:46 | |
| 6 | C4.74 | 1998/09/28 | 05:44 | 05:53 | 05:58 | |
| 7 | C4.03 | 1998/09/21 | 07:36 | 08:06 | 08:23 | |
| 8 | C3.77 | 1998/09/27 | 08:06 | 08:13 | 08:23 | |
| 9 | C3.27 | 1998/09/23 | 22:43 | 22:50 | 22:55 | |
| 10 | C2.87 | 1998/09/21 | 18:12 | 18:21 | 18:34 |
Latest news
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Wednesday, 31 December 2025
Happy New Year! Celebrate with an M7.1 solar flare!
Latest forum messages
Current Farside Activity 345Broad-spectrum aurora pillars 12Incoming & Unnumbered Active Regions 126New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 66Filaments and prominences 474
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2026/01/18 | X1.9 |
| Last M-flare | 2026/01/21 | M3.4 |
| Last geomagnetic storm | 2026/01/22 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 119.4 -4.6 |
| Last 30 days | 121.1 +6.3 |