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Solar flares in August 2011
C-class93
M-class7
X-class1
LargestX6.92011-08-09
Sunspot number66.0NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| August 2010 | 8 | 1 | 0 | M1.0 |
| August 2011 | 93 | 7 | 1 | X6.9 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2011-08-09 | 07:48 | 08:05 | 20 | X6.9 | – | 11263 |
| 2011-08-04 | 03:41 | 03:57 | 23 | M9.3 | – | 11261 |
| 2011-08-03 | 13:17 | 13:48 | 53 | M6.0 | – | 11261 |
| 2011-08-08 | 18:00 | 18:10 | 18 | M3.5 | – | 11263 |
| 2011-08-09 | 03:19 | 03:54 | 49 | M2.5 | – | 11263 |
| 2011-08-03 | 04:29 | 04:32 | 6 | M1.7 | – | 11263 |
| 2011-08-02 | 05:19 | 06:19 | 89 | M1.4 | – | 11261 |
| 2011-08-03 | 03:08 | 03:37 | 43 | M1.1 | – | 11261 |
| 2011-08-03 | 07:38 | 07:58 | 28 | C8.7 | – | 11261 |
| 2011-08-03 | 19:23 | 19:30 | 19 | C8.5 | – | 11261 |
| 2011-08-08 | 22:00 | 22:09 | 20 | C7.7 | – | 11263 |
| 2011-08-11 | 09:34 | 10:23 | 62 | C6.2 | – | 11263 |
| 2011-08-10 | 10:21 | 10:44 | 34 | C6.1 | – | 11263 |
| 2011-08-30 | 22:02 | 22:46 | 51 | C5.5 | – | 11281 |
| 2011-08-08 | 23:02 | 23:22 | 57 | C5.3 | – | 11263 |
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
101 flares of class C or larger in August 2011; by M/X count it ranks 270 of 565 months.