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Solar flares in April 1983
C-class226
M-class5
X-class0
LargestM6.71983-04-18
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| April 1982 | 225 | 13 | 0 | M6.7 |
| April 1983 | 226 | 5 | 0 | M6.7 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1983-04-18 | 01:22 | 01:48 | 66 | M6.7 | S11E90 | 4150 |
| 1983-04-30 | 08:08 | 08:22 | 178 | M2.9 | S19W17 | 4154 |
| 1983-04-27 | 13:50 | 13:56 | 38 | M1.3 | S19E15 | 4154 |
| 1983-04-28 | 10:48 | 10:52 | 30 | M1.2 | S05E26 | 4157 |
| 1983-04-27 | 02:48 | 02:55 | 16 | M1.1 | S20E22 | 4154 |
| 1983-04-22 | 09:05 | 09:19 | 18 | C9.9 | – | – |
| 1983-04-21 | 20:48 | 21:04 | 21 | C7.8 | – | – |
| 1983-04-25 | 04:33 | 04:41 | 45 | C6.3 | S04E68 | 4157 |
| 1983-04-15 | 06:46 | 06:55 | 20 | C5.9 | – | – |
| 1983-04-26 | 03:05 | 03:12 | 28 | C5.9 | S15E38 | 4156 |
| 1983-04-24 | 01:24 | 01:27 | 11 | C5.4 | S18E59 | 4156 |
| 1983-04-09 | 06:20 | 06:31 | 16 | C4.8 | – | – |
| 1983-04-30 | 03:36 | 03:39 | 30 | C4.2 | S09E72 | 4165 |
| 1983-04-24 | 03:00 | 03:23 | 71 | C4.1 | S15E70 | 4156 |
| 1983-04-22 | 00:01 | 00:08 | 13 | C4.0 | – | – |
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
231 flares of class C or larger in April 1983; by M/X count it ranks 310 of 565 months.