Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 6659
C38
M28
X6
LargestX12.01991-06-01
Span17 days
Flares by day
1
1
2
3
1
4
7
10
5
4
7
8
11
6
2
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-06-01 | 15:09 | 15:29 | 65 | X12.0 | N25E90 | 6659 |
| 1991-06-03 | 02:04 | 02:07 | 25 | C9.9 | N27E78 | 6659 |
| 1991-06-04 | 03:37 | – | 233 | X12.0 | N30E70 | 6659 |
| 1991-06-04 | 20:10 | 20:14 | 9 | M1.0 | – | 6659 |
| 1991-06-05 | 08:30 | 08:30 | 22 | C2.4 | N30E57 | 6659 |
| 1991-06-05 | 15:40 | 15:59 | 78 | C7.7 | N28E47 | 6659 |
| 1991-06-05 | 17:27 | 17:43 | 67 | M1.0 | N32E50 | 6659 |
| 1991-06-06 | 00:54 | 01:12 | 81 | X12.0 | N33E44 | 6659 |
| 1991-06-07 | 00:13 | 00:51 | 279 | M4.2 | N27E24 | 6659 |
| 1991-06-07 | 12:33 | 12:34 | 14 | C2.8 | N33E30 | 6659 |
| 1991-06-07 | 12:54 | 13:00 | 15 | C2.6 | N31E30 | 6659 |
| 1991-06-07 | 22:12 | 22:17 | 10 | C2.2 | N35E29 | 6659 |
| 1991-06-08 | 04:13 | 04:14 | 3 | C2.6 | N32E16 | 6659 |
| 1991-06-08 | 06:04 | 06:05 | 4 | C2.0 | N30E14 | 6659 |
| 1991-06-08 | 13:21 | 13:24 | 28 | C5.7 | N34E14 | 6659 |
| 1991-06-08 | 15:36 | 15:36 | 9 | C4.1 | N36E13 | 6659 |
| 1991-06-08 | 16:37 | 16:40 | 13 | C3.6 | N36E15 | 6659 |
| 1991-06-08 | 17:02 | 17:02 | 27 | C3.7 | N32E09 | 6659 |
| 1991-06-08 | 18:54 | 18:57 | 25 | C3.8 | N34E10 | 6659 |
| 1991-06-09 | 01:37 | 01:40 | 167 | X10.0 | N34E04 | 6659 |
| 1991-06-09 | 05:48 | 05:50 | 44 | M1.9 | N27W04 | 6659 |
| 1991-06-09 | 08:41 | 08:47 | 13 | C3.8 | N31W00 | 6659 |
| 1991-06-09 | 09:45 | 09:53 | 35 | M1.2 | N28W04 | 6659 |
| 1991-06-09 | 10:58 | 10:58 | 8 | C4.9 | N30W10 | 6659 |
| 1991-06-09 | 12:27 | 12:32 | 15 | C2.3 | N28E03 | 6659 |
| 1991-06-09 | 13:00 | 13:18 | 43 | M1.2 | N27W06 | 6659 |
| 1991-06-09 | 18:14 | 18:16 | 10 | C4.7 | N32W06 | 6659 |
| 1991-06-09 | 20:04 | 20:04 | 14 | M1.3 | N31W07 | 6659 |
| 1991-06-09 | 22:45 | 22:49 | 8 | C4.4 | N36W04 | 6659 |
| 1991-06-10 | 00:24 | 02:28 | 131 | M4.5 | N31W10 | 6659 |
| 1991-06-10 | 07:26 | 09:27 | 143 | C4.5 | N31W11 | 6659 |
| 1991-06-10 | 10:57 | 11:03 | 50 | M1.2 | N28W20 | 6659 |
| 1991-06-10 | 13:53 | 13:56 | 94 | M6.4 | N29W21 | 6659 |
| 1991-06-10 | 16:53 | 16:54 | 68 | M3.2 | N35W11 | 6659 |
| 1991-06-11 | 02:09 | 02:29 | 71 | X12.0 | N31W17 | 6659 |
| 1991-06-11 | 03:41 | 03:41 | 132 | M2.2 | N29W11 | 6659 |
| 1991-06-11 | 17:30 | 17:34 | 8 | M1.1 | N32W29 | 6659 |
| 1991-06-11 | 20:05 | 20:17 | 200 | M5.3 | N26W42 | 6659 |
| 1991-06-12 | 09:09 | 09:17 | 16 | C5.2 | N27W39 | 6659 |
| 1991-06-12 | 10:13 | 10:15 | 19 | C4.3 | N27W34 | 6659 |
| 1991-06-12 | 16:03 | 16:04 | 40 | C4.0 | N29W42 | 6659 |
| 1991-06-12 | 16:53 | 17:07 | 45 | C7.7 | N29W43 | 6659 |
| 1991-06-12 | 17:43 | 17:59 | 76 | M1.4 | N27W41 | 6659 |
| 1991-06-12 | 20:20 | 20:20 | 23 | C5.3 | N29W45 | 6659 |
| 1991-06-12 | 21:14 | 21:17 | 35 | M1.9 | N28W46 | 6659 |
| 1991-06-13 | 03:25 | 03:26 | 11 | C9.6 | N30W48 | 6659 |
| 1991-06-13 | 04:20 | 05:40 | 156 | M1.5 | N28W50 | 6659 |
| 1991-06-13 | 08:44 | 08:53 | 15 | C8.5 | N29W54 | 6659 |
| 1991-06-13 | 09:29 | 09:39 | 47 | M1.8 | N28W52 | 6659 |
| 1991-06-13 | 17:40 | 18:03 | 46 | M5.4 | N31W55 | 6659 |
| 1991-06-13 | 20:10 | 20:10 | 21 | C4.4 | N30W53 | 6659 |
| 1991-06-13 | 21:59 | 22:07 | 25 | M2.2 | N31W60 | 6659 |
| 1991-06-13 | 23:28 | 00:01 | 87 | M1.6 | N30W61 | 6659 |
| 1991-06-14 | 00:14 | 00:19 | 29 | M4.1 | N31W56 | 6659 |
| 1991-06-14 | 01:24 | 01:37 | 81 | M7.3 | N30W64 | 6659 |
| 1991-06-14 | 03:45 | 03:49 | 12 | C4.7 | N31W58 | 6659 |
| 1991-06-14 | 04:19 | 04:22 | 14 | M1.3 | N31W58 | 6659 |
| 1991-06-14 | 05:23 | 05:24 | 14 | M1.1 | N31W69 | 6659 |
| 1991-06-14 | 10:56 | 10:57 | 7 | C9.7 | N28W66 | 6659 |
| 1991-06-14 | 13:38 | 13:43 | 17 | C5.9 | N30W63 | 6659 |
| 1991-06-14 | 19:14 | 19:14 | 5 | M1.6 | N28W65 | 6659 |
| 1991-06-14 | 21:20 | 21:21 | 6 | C4.1 | N31W71 | 6659 |
| 1991-06-14 | 22:31 | 22:35 | 7 | C5.7 | N32W73 | 6659 |
| 1991-06-14 | 23:27 | 23:37 | 19 | C4.0 | N32W74 | 6659 |
| 1991-06-15 | 00:31 | 00:34 | 29 | C6.0 | N33W69 | 6659 |
| 1991-06-15 | 01:57 | 01:58 | 6 | C3.3 | N30W82 | 6659 |
| 1991-06-15 | 04:11 | 04:11 | 84 | C6.6 | N31W63 | 6659 |
| 1991-06-15 | 05:42 | 05:43 | 3 | C9.7 | N31W69 | 6659 |
| 1991-06-15 | 06:33 | 08:31 | 284 | X12.0 | N33W69 | 6659 |
| 1991-06-15 | 18:53 | 18:53 | 8 | C5.5 | N33W76 | 6659 |
| 1991-06-17 | 04:12 | 04:12 | 8 | M5.2 | N33W90 | 6659 |
| 1991-06-17 | 08:27 | 08:28 | 12 | M4.0 | N35W89 | 6659 |
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 6659 produced 72 C+ flares between 1991-06-01 and 1991-06-17.