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Solar flares in January 2017
C-class8
M-class0
X-class0
LargestC9.32017-01-21
Sunspot number23.6NOAA SWPC
Flares per day (C and above)
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| January 2016 | 28 | 1 | 0 | M2.3 |
| January 2017 | 8 | 0 | 0 | C9.3 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2017-01-21 | 07:14 | 07:26 | 15 | C9.3 | N13E44 | 12628 |
| 2017-01-21 | 10:59 | 11:08 | 12 | C6.1 | – | – |
| 2017-01-12 | 15:54 | 16:18 | 47 | C3.9 | – | – |
| 2017-01-28 | 20:56 | 21:09 | 25 | C2.8 | – | – |
| 2017-01-21 | 13:19 | 13:26 | 11 | C1.8 | – | – |
| 2017-01-21 | 06:23 | 06:29 | 13 | C1.2 | N11E46 | 12628 |
| 2017-01-21 | 10:19 | 10:23 | 8 | C1.1 | – | – |
| 2017-01-21 | 09:40 | 09:46 | 12 | C1.0 | – | – |
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.
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About this page
8 flares of class C or larger in January 2017; by M/X count it ranks 541 of 565 months.