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Solar flares in September 1988
C-class141
M-class10
X-class0
LargestM7.91988-09-27
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| September 1987 | 27 | 1 | 0 | M1.3 |
| September 1988 | 141 | 10 | 0 | M7.9 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1988-09-27 | 16:07 | 16:16 | 70 | M7.9 | S27E65 | 5171 |
| 1988-09-28 | 22:55 | 23:08 | 74 | M5.7 | S27E48 | 5171 |
| 1988-09-25 | 00:24 | 00:37 | 18 | M2.3 | S18E67 | 5169 |
| 1988-09-08 | 12:33 | 12:38 | 18 | M2.0 | S23W79 | 5131 |
| 1988-09-22 | 08:05 | 08:07 | 16 | M2.0 | N26E41 | 5159 |
| 1988-09-30 | 19:00 | 19:12 | 121 | M1.7 | S27E25 | 5171 |
| 1988-09-19 | 11:15 | 11:17 | 13 | M1.6 | N30E76 | 5159 |
| 1988-09-27 | 09:50 | 09:56 | 53 | M1.6 | S23E63 | 5171 |
| 1988-09-08 | 18:40 | 18:41 | 26 | M1.2 | S25W27 | 5131 |
| 1988-09-29 | 05:44 | 06:01 | 59 | M1.1 | S27E48 | 5171 |
| 1988-09-19 | 21:42 | 21:48 | 13 | C8.9 | N31E73 | 5159 |
| 1988-09-22 | 10:26 | 10:32 | 11 | C8.1 | – | – |
| 1988-09-22 | 22:41 | 22:44 | 15 | C7.6 | S14W07 | 5156 |
| 1988-09-20 | 02:22 | 02:25 | 22 | C6.7 | N28E69 | 5159 |
| 1988-09-26 | 02:24 | 02:53 | 55 | C6.3 | S37W35 | 5158 |
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
151 flares of class C or larger in September 1988; by M/X count it ranks 235 of 565 months.