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Solar flares in November 1999
C-class203
M-class40
X-class1
LargestX1.41999-11-27
Sunspot number199.3NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| November 1998 | 184 | 15 | 5 | X3.7 |
| November 1999 | 203 | 40 | 1 | X1.4 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1999-11-27 | 12:05 | 12:12 | 11 | X1.4 | S15W68 | 8771 |
| 1999-11-14 | 07:54 | 08:01 | 10 | M8.0 | S15E27 | 8763 |
| 1999-11-17 | 09:47 | 09:57 | 15 | M7.4 | N17E21 | 8766 |
| 1999-11-26 | 13:38 | 13:43 | 30 | M6.0 | S15W59 | 8778 |
| 1999-11-26 | 01:10 | 01:23 | 28 | M5.7 | – | 8771 |
| 1999-11-14 | 15:47 | 16:07 | 26 | M5.6 | – | 8766 |
| 1999-11-16 | 02:36 | 02:46 | 18 | M3.8 | N17E38 | 8766 |
| 1999-11-28 | 01:26 | 01:46 | 34 | M3.5 | – | 8771 |
| 1999-11-21 | 18:10 | 18:20 | 15 | M3.4 | S15W56 | 8765 |
| 1999-11-20 | 22:17 | 22:35 | 34 | M3.2 | S15E19 | 8771 |
| 1999-11-05 | 18:04 | 18:29 | 100 | M3.0 | – | – |
| 1999-11-16 | 04:05 | 04:10 | 8 | M3.0 | N12W74 | 8760 |
| 1999-11-24 | 23:27 | 23:37 | 17 | M3.0 | S19W43 | 8771 |
| 1999-11-15 | 08:25 | 08:41 | 30 | M2.9 | S13E29 | 8765 |
| 1999-11-14 | 18:03 | 18:09 | 10 | M2.8 | – | – |
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
244 flares of class C or larger in November 1999; by M/X count it ranks 62 of 565 months.