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Solar flares in September 1997
C-class77
M-class6
X-class0
LargestM5.91997-09-24
Sunspot number59.3NOAA SWPC
Flares per day (C and above)
M/X flares per day
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1997-09-24 | 02:43 | 02:48 | 9 | M5.9 | S31E19 | 8088 |
| 1997-09-24 | 10:57 | 11:06 | 13 | M3.0 | S28E18 | 8088 |
| 1997-09-17 | 11:35 | 11:43 | 17 | M1.7 | N21W82 | 8084 |
| 1997-09-02 | 12:25 | 12:30 | 9 | M1.0 | N28W37 | 8076 |
| 1997-09-08 | 19:23 | 19:27 | 25 | M1.0 | S28W07 | 8083 |
| 1997-09-17 | 17:45 | 18:03 | 42 | M1.0 | N21W84 | 8084 |
| 1997-09-09 | 09:45 | 09:53 | 18 | C9.7 | S20E44 | 8085 |
| 1997-09-19 | 01:39 | 01:50 | 14 | C8.6 | S17W88 | 8085 |
| 1997-09-24 | 18:24 | 18:34 | 21 | C8.3 | S29E15 | 8088 |
| 1997-09-25 | 11:40 | 11:49 | 15 | C7.2 | S27E02 | 8088 |
| 1997-09-17 | 22:39 | 22:51 | 19 | C7.1 | – | – |
| 1997-09-17 | 01:17 | 01:36 | 22 | C5.6 | – | – |
| 1997-09-08 | 20:00 | 20:15 | 21 | C5.4 | – | – |
| 1997-09-22 | 18:06 | 18:17 | 18 | C5.1 | S28E40 | 8088 |
| 1997-09-22 | 14:10 | 14:16 | 16 | C4.7 | S28E43 | 8088 |
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
83 flares of class C or larger in September 1997; by M/X count it ranks 297 of 565 months.