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Solar flares in February 1991
C-class201
M-class52
X-class1
LargestX1.21991-02-25
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| February 1990 | 154 | 10 | 0 | M6.9 |
| February 1991 | 201 | 52 | 1 | X1.2 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-02-25 | 08:09 | 08:22 | 81 | X1.2 | S16W80 | 6497 |
| 1991-02-07 | 14:56 | 15:02 | 39 | M8.8 | S10W86 | 6471 |
| 1991-02-08 | 16:15 | 16:15 | 7 | M7.2 | S12W90 | 6471 |
| 1991-02-04 | 10:47 | 10:51 | 30 | M6.8 | S17W87 | 6469 |
| 1991-02-07 | 21:14 | 21:16 | 20 | M5.3 | N16E43 | 6487 |
| 1991-02-07 | 17:03 | 17:12 | 89 | M4.9 | – | – |
| 1991-02-08 | 06:29 | 07:48 | 162 | M4.7 | – | – |
| 1991-02-06 | 14:49 | 15:01 | 24 | M4.0 | S09W71 | 6471 |
| 1991-02-04 | 18:28 | 18:42 | 55 | M3.6 | S15W89 | 6469 |
| 1991-02-14 | 12:31 | 12:33 | 49 | M3.6 | N10W45 | 6487 |
| 1991-02-06 | 18:35 | 18:36 | 21 | M3.1 | S08W76 | 6471 |
| 1991-02-04 | 01:42 | 01:51 | 31 | M2.8 | S12W81 | 6469 |
| 1991-02-25 | 16:01 | 16:01 | 8 | M2.8 | S17W45 | 6504 |
| 1991-02-03 | 10:51 | 10:53 | 51 | M2.7 | S17W74 | 6469 |
| 1991-02-18 | 06:33 | 07:30 | 66 | M2.6 | S18E48 | 6504 |
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
254 flares of class C or larger in February 1991; by M/X count it ranks 32 of 565 months.