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Solar flares in October 2012
C-class99
M-class6
X-class1
LargestX1.82012-10-23
Sunspot number73.5NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| October 2011 | 123 | 8 | 0 | M3.9 |
| October 2012 | 99 | 6 | 1 | X1.8 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2012-10-23 | 03:13 | 03:17 | 8 | X1.8 | – | – |
| 2012-10-20 | 18:05 | 18:14 | 14 | M9.0 | – | – |
| 2012-10-22 | 18:38 | 18:51 | 23 | M5.0 | S12E61 | 11598 |
| 2012-10-08 | 11:05 | 11:17 | 18 | M2.3 | – | – |
| 2012-10-09 | 23:22 | 23:31 | 13 | M1.7 | – | – |
| 2012-10-21 | 19:46 | 20:03 | 34 | M1.3 | S10E76 | 11598 |
| 2012-10-10 | 04:51 | 05:04 | 29 | M1.0 | – | – |
| 2012-10-12 | 08:08 | 08:20 | 21 | C9.0 | N14E47 | 11589 |
| 2012-10-21 | 02:54 | 03:08 | 22 | C7.8 | N03E47 | 11596 |
| 2012-10-17 | 07:52 | 08:02 | 24 | C7.4 | – | – |
| 2012-10-22 | 15:52 | 16:03 | 18 | C6.3 | – | – |
| 2012-10-09 | 15:17 | 15:25 | 16 | C5.9 | – | – |
| 2012-10-21 | 05:24 | 05:34 | 22 | C5.6 | – | – |
| 2012-10-10 | 02:50 | 03:10 | 29 | C5.2 | – | – |
| 2012-10-01 | 01:42 | 01:47 | 8 | C4.8 | – | – |
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.
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About this page
106 flares of class C or larger in October 2012; by M/X count it ranks 284 of 565 months.