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Solar flares in October 1986
C-class30
M-class1
X-class0
LargestM4.71986-10-19
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| October 1985 | 20 | 1 | 0 | M1.8 |
| October 1986 | 30 | 1 | 0 | M4.7 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1986-10-19 | 00:15 | 00:43 | 115 | M4.7 | N22E60 | 4750 |
| 1986-10-19 | 21:10 | 21:15 | 18 | C5.2 | N21E48 | 4750 |
| 1986-10-25 | 06:08 | 06:08 | 15 | C4.1 | N26W17 | 4750 |
| 1986-10-17 | 03:43 | 04:24 | 103 | C3.7 | – | – |
| 1986-10-14 | 21:54 | 22:23 | 63 | C3.3 | – | 4747 |
| 1986-10-16 | 14:17 | 14:31 | 26 | C2.9 | – | – |
| 1986-10-24 | 12:39 | 12:42 | 5 | C2.4 | – | – |
| 1986-10-14 | 13:38 | 14:50 | 85 | C2.2 | – | – |
| 1986-10-17 | 00:46 | 00:51 | 9 | C2.0 | – | 4750 |
| 1986-10-18 | 00:12 | 00:12 | 5 | C2.0 | N22E69 | 4750 |
| 1986-10-23 | 01:03 | 01:06 | 32 | C1.9 | N24E12 | 4750 |
| 1986-10-18 | 03:42 | 03:43 | 5 | C1.8 | N21E68 | 4750 |
| 1986-10-31 | 20:59 | 22:15 | 181 | C1.8 | – | – |
| 1986-10-18 | 00:29 | 00:32 | 10 | C1.6 | N19E67 | 4750 |
| 1986-10-20 | 07:56 | 07:59 | 12 | C1.6 | N22E43 | 4750 |
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.
← September 1986November 1986 →
About this page
31 flares of class C or larger in October 1986; by M/X count it ranks 410 of 565 months.