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Solar flares in January 2018
C-class2
M-class0
X-class0
LargestC1.42018-01-18
Sunspot number5.8NOAA SWPC
Flares per day (C and above)
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| January 2017 | 8 | 0 | 0 | C9.3 |
| January 2018 | 2 | 0 | 0 | C1.4 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2018-01-18 | 07:22 | 07:35 | 17 | C1.4 | – | – |
| 2018-01-22 | 02:33 | 02:57 | 47 | C1.4 | – | – |
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
2 flares of class C or larger in January 2018; by M/X count it ranks 548 of 565 months.