Solar Flare WatchHome › Flare history › 2018
Solar flares in March 2018
C-class4
M-class0
X-class0
LargestC7.12018-03-30
Sunspot number2.4NOAA SWPC
Flares per day (C and above)
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| March 2017 | 11 | 0 | 0 | C5.1 |
| March 2018 | 4 | 0 | 0 | C7.1 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2018-03-30 | 07:53 | 08:04 | 15 | C7.1 | – | – |
| 2018-03-02 | 10:51 | 11:07 | 22 | C3.0 | – | – |
| 2018-03-02 | 00:25 | 00:52 | 52 | C1.0 | – | – |
| 2018-03-31 | 08:55 | 09:11 | 29 | 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.
About this page
4 flares of class C or larger in March 2018; by M/X count it ranks 549 of 565 months.