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Solar flares in April 1987
C-class44
M-class2
X-class0
LargestM1.11987-04-05
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| April 1986 | 7 | 3 | 0 | M2.4 |
| April 1987 | 44 | 2 | 0 | M1.1 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1987-04-05 | 19:31 | 19:39 | 13 | M1.1 | S29E90 | 4787 |
| 1987-04-16 | 15:44 | 16:16 | 140 | M1.0 | S32W43 | 4790 |
| 1987-04-06 | 04:29 | 04:31 | 7 | C9.2 | S28E86 | 4787 |
| 1987-04-15 | 07:36 | 07:36 | 14 | C6.6 | S31W29 | 4787 |
| 1987-04-10 | 18:19 | 18:24 | 31 | C5.5 | S23W17 | 4786 |
| 1987-04-17 | 23:36 | 23:49 | 63 | C5.2 | S32W55 | 4787 |
| 1987-04-24 | 07:34 | 07:36 | 10 | C3.7 | N26W51 | 4798 |
| 1987-04-15 | 11:36 | 11:54 | 116 | C3.5 | S34W35 | 4787 |
| 1987-04-18 | 13:57 | 13:59 | 25 | C3.5 | S32W70 | 4790 |
| 1987-04-20 | 02:14 | 02:18 | 8 | C3.2 | – | – |
| 1987-04-16 | 15:11 | 15:15 | 23 | C3.0 | S32W44 | 4790 |
| 1987-04-18 | 14:37 | 14:59 | 35 | C2.8 | – | 4790 |
| 1987-04-18 | 21:47 | 21:54 | 22 | C2.8 | – | – |
| 1987-04-09 | 06:37 | 06:38 | 30 | C2.6 | S06E62 | 4789 |
| 1987-04-11 | 05:12 | 05:12 | 8 | C2.1 | S25W20 | 4786 |
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
46 flares of class C or larger in April 1987; by M/X count it ranks 385 of 565 months.