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Solar flares in June 2023
C-class256
M-class23
X-class1
LargestX1.02023-06-20
Sunspot number140.6NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| June 2022 | 110 | 3 | 0 | M3.4 |
| June 2023 | 256 | 23 | 1 | X1.0 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2023-06-20 | 16:42 | 17:09 | 43 | X1.0 | – | – |
| 2023-06-22 | 23:29 | 23:44 | 27 | M4.8 | – | – |
| 2023-06-07 | 11:18 | 11:46 | 40 | M4.7 | – | – |
| 2023-06-29 | 14:00 | 14:15 | 22 | M3.8 | – | – |
| 2023-06-09 | 16:48 | 17:11 | 36 | M2.5 | – | – |
| 2023-06-18 | 13:25 | 13:53 | 48 | M2.5 | – | – |
| 2023-06-28 | 08:26 | 08:44 | 32 | M1.9 | – | – |
| 2023-06-20 | 11:17 | 11:25 | 17 | M1.8 | – | – |
| 2023-06-26 | 16:08 | 16:22 | 25 | M1.6 | – | – |
| 2023-06-02 | 02:32 | 02:41 | 12 | M1.5 | – | – |
| 2023-06-19 | 03:37 | 03:50 | 20 | M1.4 | – | – |
| 2023-06-18 | 00:25 | 00:31 | 14 | M1.3 | – | – |
| 2023-06-27 | 14:57 | 15:14 | – | M1.2 | – | – |
| 2023-06-19 | 12:06 | 12:14 | 11 | M1.1 | – | – |
| 2023-06-20 | 16:27 | 16:33 | 9 | M1.1 | – | – |
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
280 flares of class C or larger in June 2023; by M/X count it ranks 136 of 565 months.