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Solar flares in December 1997
C-class37
M-class1
X-class0
LargestM1.21997-12-01
Sunspot number58.3NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| December 1996 | 11 | 0 | 0 | C5.2 |
| December 1997 | 37 | 1 | 0 | M1.2 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1997-12-01 | 02:32 | 02:37 | 15 | M1.2 | N19E27 | 8113 |
| 1997-12-21 | 03:41 | 03:54 | 26 | C7.0 | – | – |
| 1997-12-01 | 13:23 | 13:31 | 12 | C6.6 | N20E19 | 8113 |
| 1997-12-22 | 15:17 | 15:41 | 41 | C6.5 | S24E58 | 8124 |
| 1997-12-31 | 20:18 | 20:27 | 15 | C4.5 | S22W64 | 8124 |
| 1997-12-01 | 19:08 | 19:25 | 37 | C4.3 | N18E12 | 8113 |
| 1997-12-22 | 01:55 | 02:20 | 43 | C3.3 | – | – |
| 1997-12-27 | 16:28 | 16:38 | 18 | C3.2 | S23W06 | 8124 |
| 1997-12-21 | 16:34 | 16:45 | 50 | C2.9 | – | – |
| 1997-12-01 | 18:37 | 18:43 | 10 | C2.4 | N20E16 | 8113 |
| 1997-12-15 | 23:39 | 23:50 | 25 | C2.4 | – | – |
| 1997-12-12 | 11:45 | 11:54 | 14 | C2.3 | – | – |
| 1997-12-03 | 00:21 | 00:29 | 15 | C2.2 | – | – |
| 1997-12-03 | 03:23 | 03:35 | 23 | C2.1 | N19W03 | 8113 |
| 1997-12-26 | 05:51 | 05:57 | 13 | C2.0 | S22E07 | 8124 |
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
38 flares of class C or larger in December 1997; by M/X count it ranks 424 of 565 months.