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Solar flares in May 2013
C-class173
M-class14
X-class4
LargestX3.22013-05-14
Sunspot number125.6NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| May 2012 | 174 | 12 | 0 | M5.7 |
| May 2013 | 173 | 14 | 4 | X3.2 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2013-05-14 | 00:00 | 01:11 | 80 | X3.2 | – | – |
| 2013-05-13 | 15:48 | 16:05 | 28 | X2.8 | N14E83 | – |
| 2013-05-13 | 01:53 | 02:17 | 39 | X1.7 | – | – |
| 2013-05-15 | 01:25 | 01:48 | 33 | X1.2 | N12E64 | 11748 |
| 2013-05-03 | 17:24 | 17:32 | 17 | M5.7 | N16E81 | – |
| 2013-05-22 | 13:08 | 13:32 | 60 | M5.0 | S18W15 | 11747 |
| 2013-05-10 | 00:44 | 00:57 | 24 | M3.9 | – | – |
| 2013-05-17 | 08:43 | 08:57 | 36 | M3.2 | N12E57 | 11748 |
| 2013-05-12 | 20:17 | 20:32 | 46 | M1.9 | – | – |
| 2013-05-20 | 05:16 | 05:25 | 47 | M1.7 | – | – |
| 2013-05-05 | 17:42 | 17:56 | 16 | M1.4 | S16W09 | 11734 |
| 2013-05-03 | 16:39 | 16:55 | 43 | M1.3 | N10W38 | 11731 |
| 2013-05-10 | 12:37 | 12:56 | 27 | M1.3 | – | – |
| 2013-05-13 | 11:57 | 12:03 | 12 | M1.3 | – | – |
| 2013-05-16 | 21:36 | 21:53 | 27 | M1.3 | N13E41 | 11748 |
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
191 flares of class C or larger in May 2013; by M/X count it ranks 171 of 565 months.