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Solar flares in June 1991
C-class236
M-class66
X-class6
LargestX12.01991-06-01
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| June 1990 | 139 | 21 | 0 | M6.4 |
| June 1991 | 236 | 66 | 6 | X12.0 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-06-01 | 15:09 | 15:29 | 65 | X12.0 | N25E90 | 6659 |
| 1991-06-04 | 03:37 | – | 233 | X12.0 | N30E70 | 6659 |
| 1991-06-06 | 00:54 | 01:12 | 81 | X12.0 | N33E44 | 6659 |
| 1991-06-11 | 02:09 | 02:29 | 71 | X12.0 | N31W17 | 6659 |
| 1991-06-15 | 06:33 | 08:31 | 284 | X12.0 | N33W69 | 6659 |
| 1991-06-09 | 01:37 | 01:40 | 167 | X10.0 | N34E04 | 6659 |
| 1991-06-14 | 01:24 | 01:37 | 81 | M7.3 | N30W64 | 6659 |
| 1991-06-10 | 13:53 | 13:56 | 94 | M6.4 | N29W21 | 6659 |
| 1991-06-28 | 04:54 | 06:26 | 334 | M6.0 | – | 6703 |
| 1991-06-15 | 20:52 | 20:57 | 47 | M5.5 | S14W80 | 6666 |
| 1991-06-13 | 17:40 | 18:03 | 46 | M5.4 | N31W55 | 6659 |
| 1991-06-11 | 20:05 | 20:17 | 200 | M5.3 | N26W42 | 6659 |
| 1991-06-02 | 07:37 | 07:46 | 120 | M5.2 | – | – |
| 1991-06-17 | 04:12 | 04:12 | 8 | M5.2 | N33W90 | 6659 |
| 1991-06-30 | 02:43 | 02:46 | 37 | M5.0 | S06W19 | 6693 |
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
308 flares of class C or larger in June 1991; by M/X count it ranks 20 of 565 months.