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Solar flares from active region 1447
C3
M12
X4
LargestX0.21978-12-12
Span5 days
Flares by day
1
2
7
5
4
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1978-12-10 | 12:33 | 12:34 | 5 | C0.1 | S18W32 | 1447 |
| 1978-12-11 | 17:50 | 18:14 | 42 | M0.1 | S19W51 | 1447 |
| 1978-12-11 | 18:07 | 19:25 | 318 | M0.7 | S16W48 | 1447 |
| 1978-12-12 | 05:25 | 05:27 | 12 | M0.1 | S16W55 | 1447 |
| 1978-12-12 | 06:45 | 06:46 | 10 | M0.1 | S17W54 | 1447 |
| 1978-12-12 | 07:54 | 07:55 | 10 | C0.8 | S16W57 | 1447 |
| 1978-12-12 | 15:03 | 15:14 | 93 | X0.2 | S19W73 | 1447 |
| 1978-12-12 | 17:26 | 18:36 | 74 | M0.1 | S19W74 | 1447 |
| 1978-12-12 | 18:36 | 18:36 | 24 | X0.1 | S17W64 | 1447 |
| 1978-12-12 | 20:53 | 20:53 | 3 | M0.1 | S18W65 | 1447 |
| 1978-12-13 | 00:17 | 00:18 | 46 | M0.2 | S18W67 | 1447 |
| 1978-12-13 | 05:13 | 06:23 | 138 | M0.1 | S16W73 | 1447 |
| 1978-12-13 | 18:02 | 18:26 | 64 | M0.2 | S19W87 | 1447 |
| 1978-12-13 | 20:08 | 20:11 | 27 | M0.1 | S19W88 | 1447 |
| 1978-12-13 | 23:53 | 23:58 | 27 | X0.1 | S17W79 | 1447 |
| 1978-12-14 | 02:27 | 02:32 | 11 | C0.8 | S17W80 | 1447 |
| 1978-12-14 | 03:55 | 03:55 | 20 | M0.1 | S15W80 | 1447 |
| 1978-12-14 | 07:22 | 07:24 | 13 | X0.1 | S15W80 | 1447 |
| 1978-12-14 | 16:23 | 16:25 | 7 | M0.1 | S19W90 | 1447 |
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 1447 produced 19 C+ flares between 1978-12-10 and 1978-12-14.