Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 4423
C19
M3
X0
LargestM2.51984-02-25
Span8 days
Flares by day
5
5
1
5
4
2
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1984-02-22 | 16:54 | 16:57 | 17 | C2.0 | S14E82 | 4423 |
| 1984-02-22 | 17:14 | 17:28 | 45 | C1.6 | S13E81 | 4423 |
| 1984-02-22 | 18:00 | 18:29 | 41 | C1.7 | S12E81 | 4423 |
| 1984-02-22 | 19:21 | 21:00 | 106 | C4.2 | S14E80 | 4423 |
| 1984-02-22 | 21:10 | 21:28 | 30 | C2.0 | S14E80 | 4423 |
| 1984-02-23 | 02:46 | 02:48 | 14 | C2.0 | S14E74 | 4423 |
| 1984-02-23 | 05:42 | 05:44 | 14 | C2.8 | S13W73 | 4423 |
| 1984-02-23 | 06:31 | 06:35 | 12 | C2.1 | S13W71 | 4423 |
| 1984-02-23 | 07:36 | 07:40 | 9 | C1.6 | S13W71 | 4423 |
| 1984-02-23 | 13:13 | 13:16 | 22 | C6.8 | S11E67 | 4423 |
| 1984-02-24 | 03:29 | 03:59 | 84 | M2.0 | S15E60 | 4423 |
| 1984-02-25 | 01:21 | 01:59 | 90 | C1.8 | S16E48 | 4423 |
| 1984-02-25 | 03:11 | 03:14 | 81 | M2.5 | S15E48 | 4423 |
| 1984-02-25 | 08:33 | 09:19 | 65 | C1.2 | S12E44 | 4423 |
| 1984-02-25 | 09:01 | 09:19 | 36 | C3.6 | – | 4423 |
| 1984-02-25 | 14:21 | 14:26 | 20 | C1.9 | S11E42 | 4423 |
| 1984-02-26 | 01:10 | 01:13 | 39 | C2.0 | – | 4423 |
| 1984-02-26 | 08:43 | 08:47 | 11 | C1.3 | S14E36 | 4423 |
| 1984-02-26 | 09:42 | 09:47 | 9 | C2.1 | S14E35 | 4423 |
| 1984-02-26 | 12:18 | 12:52 | 177 | M1.7 | S10E30 | 4423 |
| 1984-02-29 | 03:18 | 03:32 | 59 | C1.7 | S12W03 | 4423 |
| 1984-02-29 | 16:29 | 16:29 | 29 | C1.9 | S13W12 | 4423 |
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 4423 produced 22 C+ flares between 1984-02-22 and 1984-02-29.