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Solar flares in April 2017
C-class45
M-class7
X-class0
LargestM5.82017-04-03
Sunspot number30.5NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| April 2016 | 35 | 1 | 0 | M6.7 |
| April 2017 | 45 | 7 | 0 | M5.8 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2017-04-03 | 14:19 | 14:29 | 15 | M5.8 | N19W80 | 12644 |
| 2017-04-02 | 20:26 | 20:33 | 12 | M5.7 | – | – |
| 2017-04-02 | 07:50 | 08:02 | 23 | M5.3 | N12W59 | 12644 |
| 2017-04-01 | 21:35 | 21:48 | 30 | M4.4 | – | – |
| 2017-04-02 | 12:52 | 13:00 | 19 | M2.3 | – | – |
| 2017-04-02 | 18:18 | 18:38 | 70 | M2.1 | N16W68 | 12644 |
| 2017-04-03 | 00:56 | 01:05 | 16 | M1.2 | N15W75 | 12644 |
| 2017-04-02 | 02:41 | 02:46 | 7 | C8.0 | S12W08 | 12645 |
| 2017-04-03 | 13:18 | 13:24 | 10 | C7.3 | N17W80 | 12644 |
| 2017-04-03 | 04:55 | 05:27 | 41 | C5.7 | N13W72 | 12644 |
| 2017-04-06 | 12:01 | 12:10 | 19 | C5.5 | S13W68 | 12645 |
| 2017-04-18 | 19:21 | 20:10 | 88 | C5.5 | N14E77 | – |
| 2017-04-01 | 22:59 | 23:03 | 6 | C5.1 | S11W06 | 12645 |
| 2017-04-03 | 20:07 | 20:13 | 13 | C5.0 | N15W77 | 12644 |
| 2017-04-04 | 23:30 | 23:42 | 16 | C4.9 | S12W48 | 12645 |
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
52 flares of class C or larger in April 2017; by M/X count it ranks 288 of 565 months.