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Solar flares in December 1989
C-class145
M-class37
X-class2
LargestX2.81989-12-31
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| December 1988 | 208 | 45 | 4 | X4.7 |
| December 1989 | 145 | 37 | 2 | X2.8 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1989-12-31 | 09:32 | 09:45 | 45 | X2.8 | S25W51 | 5852 |
| 1989-12-30 | 04:09 | 04:18 | 65 | X1.0 | S19E09 | 5858 |
| 1989-12-28 | 03:38 | 03:49 | 112 | M9.7 | S25W07 | 5852 |
| 1989-12-29 | 18:28 | 18:29 | 7 | M9.7 | S19E21 | 5858 |
| 1989-12-29 | 10:59 | 11:05 | 45 | M8.1 | – | – |
| 1989-12-26 | 18:10 | 18:11 | 64 | M6.9 | S26E09 | 5852 |
| 1989-12-26 | 05:24 | 05:39 | 55 | M5.9 | S27E14 | 5852 |
| 1989-12-05 | 15:31 | 15:33 | 29 | M5.6 | N16W76 | 5806 |
| 1989-12-30 | 01:42 | 02:06 | 83 | M5.3 | S17E15 | 5858 |
| 1989-12-22 | 23:14 | 23:14 | 6 | M5.2 | N21E71 | 5854 |
| 1989-12-07 | 20:56 | 21:03 | 64 | M4.5 | S21W81 | 5822 |
| 1989-12-28 | 21:08 | 21:15 | 29 | M4.1 | S18E30 | 5858 |
| 1989-12-18 | 23:36 | 23:40 | 38 | M3.2 | N20E22 | 5837 |
| 1989-12-25 | 20:11 | 20:24 | 44 | M3.1 | S25E22 | 5852 |
| 1989-12-27 | 12:37 | 13:19 | 206 | M3.1 | S26W01 | 5852 |
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
184 flares of class C or larger in December 1989; by M/X count it ranks 72 of 565 months.