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Solar flares in May 1997
C-class6
M-class1
X-class0
LargestM1.31997-05-21
Sunspot number29.6NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| May 1996 | 6 | 0 | 0 | C3.1 |
| May 1997 | 6 | 1 | 0 | M1.3 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1997-05-21 | 20:03 | 20:15 | 24 | M1.3 | N05W12 | – |
| 1997-05-27 | 09:31 | 09:57 | 36 | C4.6 | N02W80 | – |
| 1997-05-20 | 21:45 | 22:10 | 31 | C4.2 | – | – |
| 1997-05-21 | 06:04 | 06:25 | 34 | C2.7 | N04W02 | – |
| 1997-05-12 | 04:42 | 04:55 | 44 | C1.3 | – | – |
| 1997-05-28 | 03:15 | 03:42 | 51 | C1.2 | – | – |
| 1997-05-27 | 15:53 | 16:04 | 24 | 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
7 flares of class C or larger in May 1997; by M/X count it ranks 422 of 565 months.