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Solar flares in May 1977
C-class7
M-class1
X-class0
LargestM0.11977-05-03
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| May 1976 | 9 | 1 | 0 | M0.2 |
| May 1977 | 7 | 1 | 0 | M0.1 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1977-05-03 | 18:06 | 18:16 | 19 | M0.1 | N34E53 | 814 |
| 1977-05-03 | 14:52 | 15:00 | 18 | C0.4 | N35E54 | 814 |
| 1977-05-04 | 11:20 | 11:25 | 18 | C0.2 | N34E45 | 814 |
| 1977-05-06 | 06:33 | 06:40 | 22 | C0.2 | N33E20 | 814 |
| 1977-05-04 | 16:40 | 16:41 | 12 | C0.1 | N33E42 | 814 |
| 1977-05-30 | 14:20 | 14:21 | 6 | C0.1 | N20W25 | 828 |
| 1977-05-04 | 17:25 | 17:28 | 16 | C0.0 | N33E42 | 814 |
| 1977-05-06 | 20:41 | 20:42 | 8 | C0.0 | N31E05 | 814 |
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 May 1977; by M/X count it ranks 404 of 565 months.