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Solar flares in December 2004
C-class40
M-class7
X-class0
LargestM4.22004-12-30
Sunspot number34.7NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| December 2003 | 104 | 6 | 0 | M2.0 |
| December 2004 | 40 | 7 | 0 | M4.2 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2004-12-30 | 22:02 | 22:18 | 26 | M4.2 | N04E46 | 10715 |
| 2004-12-29 | 15:57 | 16:27 | 41 | M2.3 | N04E62 | 10715 |
| 2004-12-30 | 10:34 | 10:47 | 23 | M2.2 | N03E53 | 10715 |
| 2004-12-02 | 23:44 | 00:06 | 51 | M1.5 | N08W02 | 10708 |
| 2004-12-29 | 19:10 | 19:20 | 15 | M1.4 | S12W90 | 10713 |
| 2004-12-31 | 14:38 | 14:45 | 10 | M1.2 | N04E38 | 10715 |
| 2004-12-01 | 07:00 | 07:20 | 41 | M1.1 | N09E19 | 10708 |
| 2004-12-29 | 02:53 | 03:00 | 10 | C7.5 | S10W90 | 10713 |
| 2004-12-28 | 00:04 | 00:10 | 8 | C7.2 | S11W70 | 10713 |
| 2004-12-28 | 17:41 | 18:01 | 47 | C7.2 | N05E79 | 10715 |
| 2004-12-31 | 14:52 | 14:59 | 12 | C6.8 | N03E38 | 10715 |
| 2004-12-31 | 04:11 | 04:44 | 62 | C5.7 | N05E44 | 10715 |
| 2004-12-23 | 09:57 | 10:08 | 19 | C5.1 | S08W00 | 10713 |
| 2004-12-29 | 05:42 | 05:53 | 16 | C4.9 | S11W90 | 10713 |
| 2004-12-28 | 12:28 | 12:35 | 12 | C4.3 | S11W75 | 10713 |
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
47 flares of class C or larger in December 2004; by M/X count it ranks 282 of 565 months.