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Solar flares in July 1987
C-class33
M-class2
X-class0
LargestM3.01987-07-24
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| July 1986 | 5 | 0 | 0 | C3.4 |
| July 1987 | 33 | 2 | 0 | M3.0 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1987-07-24 | 09:53 | 10:04 | 46 | M3.0 | – | 4826 |
| 1987-07-27 | 18:11 | 18:12 | 18 | M2.6 | S26W72 | 4826 |
| 1987-07-25 | 21:07 | 21:22 | 46 | C5.5 | S27W58 | 4826 |
| 1987-07-16 | 01:04 | 01:19 | 23 | C4.4 | – | – |
| 1987-07-27 | 02:24 | 02:24 | 0 | C3.8 | S27W71 | 4826 |
| 1987-07-23 | 19:11 | 19:23 | 34 | C3.7 | S29W28 | 4826 |
| 1987-07-24 | 00:22 | 00:35 | 33 | C3.7 | S28W28 | 4826 |
| 1987-07-23 | 09:20 | 09:22 | 27 | C3.1 | S31W22 | 4826 |
| 1987-07-22 | 16:20 | 16:51 | 48 | C2.8 | S29W13 | 4826 |
| 1987-07-23 | 18:13 | 18:15 | 32 | C2.6 | S29W28 | 4826 |
| 1987-07-26 | 09:21 | 09:54 | 53 | C2.6 | S30W61 | 4826 |
| 1987-07-25 | 22:18 | 22:19 | 31 | C2.4 | S18W28 | 4829 |
| 1987-07-23 | 07:15 | 07:15 | 22 | C2.3 | S29W21 | 4826 |
| 1987-07-22 | 15:18 | 15:26 | 41 | C2.1 | S29W13 | 4826 |
| 1987-07-29 | 01:39 | 01:51 | 22 | C2.0 | – | – |
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
35 flares of class C or larger in July 1987; by M/X count it ranks 387 of 565 months.