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Solar flares in March 2017
C-class11
M-class0
X-class0
LargestC5.12017-03-27
Sunspot number15.6NOAA SWPC
Flares per day (C and above)
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| March 2016 | 11 | 0 | 0 | C3.7 |
| March 2017 | 11 | 0 | 0 | C5.1 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2017-03-27 | 17:55 | 18:20 | 29 | C5.1 | S12E60 | 12645 |
| 2017-03-27 | 11:07 | 11:12 | 11 | C3.2 | S07E63 | – |
| 2017-03-28 | 04:47 | 04:56 | 16 | C3.2 | S09E56 | 12645 |
| 2017-03-28 | 03:18 | 03:23 | 7 | C3.1 | S09E56 | 12645 |
| 2017-03-31 | 17:28 | 17:37 | 20 | C1.7 | S12E03 | 12645 |
| 2017-03-27 | 16:52 | 17:12 | 26 | C1.6 | S11E62 | 12645 |
| 2017-03-26 | 23:49 | 00:00 | 19 | C1.3 | N14E35 | 12644 |
| 2017-03-31 | 22:54 | 23:01 | 16 | C1.2 | – | – |
| 2017-03-28 | 00:19 | 00:27 | 16 | C1.1 | N12E15 | 12644 |
| 2017-03-28 | 07:12 | 07:19 | 11 | C1.1 | S09E53 | 12645 |
| 2017-03-28 | 09:55 | 10:01 | 9 | 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
11 flares of class C or larger in March 2017; by M/X count it ranks 543 of 565 months.