Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 8674
C18
M10
X1
LargestX1.11999-08-28
Span13 days
Flares by day
4
3
5
3
2
3
3
2
1
2
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1999-08-20 | 12:36 | 14:18 | 270 | M1.8 | S28E76 | 8674 |
| 1999-08-20 | 18:25 | 18:29 | 7 | M1.2 | S23E66 | 8674 |
| 1999-08-20 | 19:21 | 19:27 | 11 | C7.8 | S23E66 | 8674 |
| 1999-08-20 | 23:03 | 23:08 | 7 | M9.8 | S25E64 | 8674 |
| 1999-08-21 | 11:00 | 11:06 | 11 | C5.2 | S26E58 | 8674 |
| 1999-08-21 | 16:30 | 16:34 | 7 | M3.7 | S25E56 | 8674 |
| 1999-08-21 | 22:10 | 22:14 | 6 | M5.9 | S24E52 | 8674 |
| 1999-08-22 | 14:09 | 14:12 | 5 | C5.3 | S28E43 | 8674 |
| 1999-08-22 | 14:27 | 14:30 | 6 | C2.0 | S28E43 | 8674 |
| 1999-08-22 | 15:00 | 15:03 | 5 | C2.1 | S25E44 | 8674 |
| 1999-08-22 | 15:46 | 15:51 | 8 | C9.8 | S25E43 | 8674 |
| 1999-08-22 | 18:01 | 18:05 | 6 | C2.1 | S27E40 | 8674 |
| 1999-08-24 | 06:06 | 06:23 | 37 | C5.3 | S27E30 | 8674 |
| 1999-08-24 | 15:40 | 15:58 | 32 | C3.1 | S24E30 | 8674 |
| 1999-08-24 | 16:50 | 17:17 | 85 | C4.4 | S26E25 | 8674 |
| 1999-08-25 | 01:32 | 01:36 | 8 | M3.6 | S28E21 | 8674 |
| 1999-08-25 | 14:39 | 14:57 | 54 | C6.5 | S23E17 | 8674 |
| 1999-08-26 | 06:57 | 07:05 | 17 | C7.1 | S28E05 | 8674 |
| 1999-08-26 | 14:52 | 14:59 | 17 | C3.7 | S23E06 | 8674 |
| 1999-08-26 | 17:06 | 17:14 | 14 | C4.7 | S21E03 | 8674 |
| 1999-08-27 | 06:28 | 06:33 | 8 | C5.5 | S28W16 | 8674 |
| 1999-08-27 | 12:50 | 13:07 | 32 | M5.5 | S23W09 | 8674 |
| 1999-08-27 | 16:23 | 16:36 | 44 | M3.0 | S31E04 | 8674 |
| 1999-08-28 | 00:50 | 01:02 | 26 | M2.8 | S26W16 | 8674 |
| 1999-08-28 | 17:52 | 18:05 | 26 | X1.1 | S26W14 | 8674 |
| 1999-08-29 | 12:05 | 12:29 | 44 | C4.4 | S21W41 | 8674 |
| 1999-08-30 | 14:40 | 14:48 | 15 | C9.4 | S28W45 | 8674 |
| 1999-08-30 | 17:23 | 18:05 | 58 | M3.8 | – | 8674 |
| 1999-09-01 | 18:52 | 18:59 | 13 | C6.6 | S28W75 | 8674 |
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.
About this page
NOAA active region 8674 produced 29 C+ flares between 1999-08-20 and 1999-09-01.