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Solar flares in December 1998
C-class194
M-class12
X-class0
LargestM8.01998-12-18
Sunspot number120.8NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| December 1997 | 37 | 1 | 0 | M1.2 |
| December 1998 | 194 | 12 | 0 | M8.0 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1998-12-18 | 17:13 | 17:22 | 14 | M8.0 | – | 8415 |
| 1998-12-17 | 07:40 | 07:45 | 9 | M3.2 | S27W46 | – |
| 1998-12-28 | 05:45 | 05:48 | 14 | M3.1 | N25W27 | – |
| 1998-12-23 | 05:13 | 06:59 | 150 | M2.3 | – | – |
| 1998-12-28 | 23:33 | 23:38 | 18 | M2.1 | N24W36 | – |
| 1998-12-20 | 08:49 | 09:00 | 14 | M1.8 | N21E46 | 8415 |
| 1998-12-24 | 11:29 | 11:45 | 45 | M1.7 | – | 8421 |
| 1998-12-28 | 23:15 | 23:22 | 18 | M1.7 | N27E14 | 8421 |
| 1998-12-28 | 05:15 | 05:31 | 29 | M1.4 | N28E26 | 8416 |
| 1998-12-25 | 05:31 | 06:34 | 116 | M1.2 | N30E66 | 8421 |
| 1998-12-23 | 08:13 | 08:16 | 8 | M1.1 | – | – |
| 1998-12-30 | 05:26 | 05:46 | 34 | M1.0 | – | 8421 |
| 1998-12-17 | 22:58 | 23:06 | 12 | C8.3 | N19E71 | 8415 |
| 1998-12-26 | 05:55 | 05:59 | 6 | C7.8 | S21E64 | 8422 |
| 1998-12-26 | 23:36 | 23:44 | 13 | C7.8 | N26W11 | – |
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
206 flares of class C or larger in December 1998; by M/X count it ranks 216 of 565 months.