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Solar flares in May 2012
C-class174
M-class12
X-class0
LargestM5.72012-05-10
Sunspot number98.7NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| May 2011 | 55 | 2 | 0 | M1.4 |
| May 2012 | 174 | 12 | 0 | M5.7 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2012-05-10 | 04:11 | 04:18 | 12 | M5.7 | N12E22 | 11476 |
| 2012-05-17 | 01:25 | 01:47 | 49 | M5.1 | N11W76 | 11476 |
| 2012-05-09 | 12:21 | 12:32 | 15 | M4.7 | N13E31 | 11476 |
| 2012-05-09 | 21:01 | 21:05 | 8 | M4.1 | – | – |
| 2012-05-07 | 14:03 | 14:31 | 49 | M1.9 | S21W46 | 11471 |
| 2012-05-09 | 14:02 | 14:08 | 12 | M1.8 | N06E22 | 11476 |
| 2012-05-10 | 20:20 | 20:26 | 10 | M1.7 | – | – |
| 2012-05-05 | 13:19 | 13:23 | 10 | M1.4 | N09E85 | 11476 |
| 2012-05-08 | 13:02 | 13:08 | 10 | M1.4 | N14E43 | 11476 |
| 2012-05-05 | 22:56 | 23:01 | 8 | M1.3 | N09E75 | 11476 |
| 2012-05-06 | 17:41 | 17:47 | 11 | M1.3 | N10E64 | 11476 |
| 2012-05-06 | 01:12 | 01:18 | 8 | M1.1 | – | – |
| 2012-05-09 | 20:45 | 20:52 | 10 | C9.2 | – | – |
| 2012-05-10 | 05:17 | 05:22 | 8 | C8.3 | N10E17 | 11476 |
| 2012-05-07 | 11:02 | 11:08 | 9 | C7.9 | – | – |
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
186 flares of class C or larger in May 2012; by M/X count it ranks 219 of 565 months.