Solar Flare WatchSolar flares in 1987
C357
M30
X0
LargestM3.51987-11-21
M/X flares by month
- January 1987
- February 1987
- March 1987
- April 1987
- May 1987
- June 1987
- July 1987
- August 1987
- September 1987
- October 1987
- November 1987
- December 1987
Nearby years (M + X)
596
112
121
16
22
30
206
679
289
644
212
Top 20 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1987-11-21 | 17:55 | 18:05 | 66 | M3.5 | S23E16 | 4891 |
| 1987-11-05 | 04:56 | 04:58 | 16 | M3.1 | N30W73 | 4875 |
| 1987-07-24 | 09:53 | 10:04 | 46 | M3.0 | – | 4826 |
| 1987-07-27 | 18:11 | 18:12 | 18 | M2.6 | S26W72 | 4826 |
| 1987-11-05 | 23:34 | 23:35 | 5 | M2.1 | N29W75 | 4875 |
| 1987-12-26 | 18:04 | 18:05 | 23 | M1.8 | S33E66 | 4912 |
| 1987-10-16 | 09:50 | 10:02 | 20 | M1.7 | – | 4866 |
| 1987-11-04 | 23:23 | 23:25 | 9 | M1.5 | N27W62 | 4875 |
| 1987-08-22 | 09:30 | – | 14 | M1.4 | N19E77 | 4845 |
| 1987-10-17 | 12:21 | 12:23 | 40 | M1.4 | S25W36 | 4870 |
| 1987-05-25 | 03:30 | 03:42 | 33 | M1.3 | N30W49 | 4811 |
| 1987-08-07 | 19:43 | 19:45 | 27 | M1.3 | S24W17 | 4835 |
| 1987-08-08 | 01:19 | 01:33 | 23 | M1.3 | S25W20 | 4835 |
| 1987-08-08 | 03:33 | 03:38 | 12 | M1.3 | S24W21 | 4835 |
| 1987-08-08 | 13:46 | 13:51 | 29 | M1.3 | S26W26 | 4835 |
| 1987-08-09 | 13:54 | 13:55 | 7 | M1.3 | S23E81 | 4839 |
| 1987-08-22 | 16:39 | 16:48 | 38 | M1.3 | N15E67 | 4845 |
| 1987-08-23 | 22:35 | 22:57 | 73 | M1.3 | N14E52 | 4845 |
| 1987-09-21 | 01:57 | 02:04 | 17 | M1.3 | S35W64 | 4853 |
| 1987-11-04 | 17:13 | 17:15 | 28 | M1.3 | N28W67 | 4875 |
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
387 flares of class C+ in 1987: 30 M-class and 0 X-class.