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Solar flares in September 2016
C-class8
M-class0
X-class0
LargestC5.62016-09-22
Sunspot number37.4NOAA SWPC
Flares per day (C and above)
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| September 2015 | 47 | 3 | 0 | M2.1 |
| September 2016 | 8 | 0 | 0 | C5.6 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2016-09-22 | 05:40 | 05:47 | 12 | C5.6 | – | – |
| 2016-09-22 | 19:05 | 19:16 | 40 | C2.6 | – | – |
| 2016-09-22 | 17:35 | 17:53 | 34 | C1.9 | – | – |
| 2016-09-21 | 11:45 | 11:51 | 9 | C1.7 | – | – |
| 2016-09-21 | 10:23 | 10:39 | 56 | C1.6 | N06W24 | 12593 |
| 2016-09-22 | 11:46 | 11:52 | 21 | C1.5 | – | – |
| 2016-09-25 | 19:05 | 19:14 | 16 | C1.3 | – | – |
| 2016-09-27 | 07:33 | 07:48 | 32 | C1.0 | S14W30 | 12597 |
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
8 flares of class C or larger in September 2016; by M/X count it ranks 538 of 565 months.