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Solar flares from active region 4471
C4
M4
X0
LargestM5.71984-04-20
Span2 days
Flares by day
5
3
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1984-04-20 | 08:53 | 08:59 | 12 | C3.7 | N04W66 | 4471 |
| 1984-04-20 | 10:46 | – | 102 | C8.2 | N03W68 | 4471 |
| 1984-04-20 | 19:40 | 19:43 | 80 | M5.7 | N03W73 | 4471 |
| 1984-04-20 | 23:04 | 23:34 | 84 | M1.6 | N05W73 | 4471 |
| 1984-04-20 | 23:29 | 23:53 | 48 | M1.1 | – | 4471 |
| 1984-04-21 | 02:35 | 02:55 | 51 | M1.5 | N04W75 | 4471 |
| 1984-04-21 | 18:54 | 19:01 | 9 | C4.5 | – | 4471 |
| 1984-04-21 | 19:07 | 19:13 | 10 | C8.2 | – | 4471 |
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 4471 produced 8 C+ flares between 1984-04-20 and 1984-04-21.