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Solar flares in April 2018
C-class1
M-class0
X-class0
LargestC1.32018-04-01
Sunspot number6.8NOAA SWPC
Flares per day (C and above)
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| April 2017 | 45 | 7 | 0 | M5.8 |
| April 2018 | 1 | 0 | 0 | C1.3 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2018-04-01 | 12:46 | 13:07 | 33 | C1.3 | – | – |
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
1 flares of class C or larger in April 2018; by M/X count it ranks 550 of 565 months.