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Solar flares in February 1999
C-class107
M-class6
X-class0
LargestM6.61999-02-28
Sunspot number93.4NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| February 1998 | 16 | 0 | 0 | C5.2 |
| February 1999 | 107 | 6 | 0 | M6.6 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1999-02-28 | 16:31 | 16:39 | 12 | M6.6 | N28W06 | – |
| 1999-02-16 | 02:49 | 03:12 | 56 | M3.2 | S23W14 | 8458 |
| 1999-02-12 | 03:04 | 03:25 | 62 | M1.5 | N18E36 | – |
| 1999-02-16 | 04:04 | 04:08 | 10 | M1.5 | – | – |
| 1999-02-21 | 13:03 | 13:45 | 65 | M1.3 | N24W81 | 8462 |
| 1999-02-14 | 09:59 | 10:45 | 71 | M1.0 | N17E05 | 8457 |
| 1999-02-13 | 16:07 | 16:11 | 15 | C9.4 | N19E24 | 8456 |
| 1999-02-15 | 23:56 | 00:03 | 11 | C9.4 | N20E30 | 8464 |
| 1999-02-21 | 09:38 | 09:50 | 23 | C8.6 | – | – |
| 1999-02-20 | 02:17 | 03:10 | 74 | C8.2 | – | – |
| 1999-02-20 | 04:00 | 04:06 | 10 | C8.2 | S21W63 | – |
| 1999-02-12 | 13:40 | 14:07 | 42 | C7.7 | N15E33 | 8457 |
| 1999-02-15 | 09:18 | 09:27 | 16 | C7.3 | N20E03 | 8462 |
| 1999-02-16 | 17:31 | 17:42 | 24 | C6.8 | N20W14 | 8462 |
| 1999-02-16 | 01:23 | 01:28 | 8 | C6.1 | – | – |
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
113 flares of class C or larger in February 1999; by M/X count it ranks 299 of 565 months.