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Solar flares from active region 4154
C15
M4
X0
LargestM2.91983-04-30
Span13 days
Flares by day
2
2
1
1
5
1
1
2
3
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1983-04-21 | 18:30 | 19:02 | 55 | C1.3 | S08E87 | 4154 |
| 1983-04-21 | 19:33 | 19:35 | 17 | C1.1 | S10E84 | 4154 |
| 1983-04-22 | 17:34 | 17:34 | 6 | C1.3 | S11E72 | 4154 |
| 1983-04-22 | 22:43 | 22:44 | 8 | C1.4 | S21E78 | 4154 |
| 1983-04-24 | 19:12 | 19:12 | 24 | C1.2 | S06E45 | 4154 |
| 1983-04-25 | 16:15 | 16:16 | 8 | C1.7 | S13E39 | 4154 |
| 1983-04-27 | 02:48 | 02:55 | 16 | M1.1 | S20E22 | 4154 |
| 1983-04-27 | 13:50 | 13:56 | 38 | M1.3 | S19E15 | 4154 |
| 1983-04-27 | 17:00 | 17:01 | 36 | C2.1 | S09E08 | 4154 |
| 1983-04-27 | 17:19 | 17:19 | 10 | C2.0 | S15E17 | 4154 |
| 1983-04-27 | 23:41 | 23:49 | 11 | C2.9 | – | 4154 |
| 1983-04-28 | 18:31 | 18:41 | 81 | C3.4 | S18E04 | 4154 |
| 1983-04-29 | 10:16 | 10:19 | 23 | C3.3 | S13W07 | 4154 |
| 1983-04-30 | 02:55 | 03:16 | 41 | C2.2 | S21W13 | 4154 |
| 1983-04-30 | 08:08 | 08:22 | 178 | M2.9 | S19W17 | 4154 |
| 1983-05-01 | 07:12 | 07:20 | 72 | C4.7 | S14W33 | 4154 |
| 1983-05-01 | 20:45 | 21:01 | 45 | C7.4 | – | 4154 |
| 1983-05-01 | 22:58 | 23:10 | 38 | M2.9 | S15W38 | 4154 |
| 1983-05-03 | 00:12 | 00:14 | 26 | C4.5 | S18W53 | 4154 |
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 4154 produced 19 C+ flares between 1983-04-21 and 1983-05-03.