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Solar flares in December 2011
C-class141
M-class8
X-class0
LargestM4.02011-12-25
Sunspot number104.7NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| December 2010 | 4 | 0 | 0 | C5.3 |
| December 2011 | 141 | 8 | 0 | M4.0 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2011-12-25 | 18:11 | 18:16 | 9 | M4.0 | – | 11387 |
| 2011-12-31 | 13:09 | 13:15 | 10 | M2.4 | – | 11389 |
| 2011-12-26 | 20:12 | 20:30 | 24 | M2.3 | – | 11387 |
| 2011-12-29 | 21:43 | 21:51 | 16 | M2.0 | – | 11389 |
| 2011-12-29 | 13:40 | 13:50 | 21 | M1.9 | – | 11389 |
| 2011-12-26 | 02:13 | 02:27 | 23 | M1.5 | – | 11387 |
| 2011-12-31 | 16:16 | 16:26 | 18 | M1.5 | – | 11389 |
| 2011-12-30 | 03:03 | 03:09 | 10 | M1.2 | – | 11389 |
| 2011-12-27 | 04:11 | 04:22 | 20 | C8.9 | – | 11386 |
| 2011-12-25 | 11:20 | 11:26 | 11 | C8.4 | – | 11387 |
| 2011-12-30 | 10:27 | 10:32 | 10 | C8.4 | – | 11389 |
| 2011-12-25 | 20:23 | 20:29 | 10 | C7.7 | – | 11387 |
| 2011-12-14 | 14:51 | 14:59 | 10 | C7.5 | – | – |
| 2011-12-29 | 07:12 | 07:18 | 10 | C7.3 | – | 11389 |
| 2011-12-28 | 14:17 | 14:25 | 11 | C7.2 | – | 11389 |
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
149 flares of class C or larger in December 2011; by M/X count it ranks 272 of 565 months.