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Solar flares in October 1998
C-class80
M-class3
X-class0
LargestM2.41998-10-18
Sunspot number77.0NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| October 1997 | 5 | 0 | 0 | C5.9 |
| October 1998 | 80 | 3 | 0 | M2.4 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1998-10-18 | 01:38 | 01:45 | 14 | M2.4 | N16W52 | 8358 |
| 1998-10-07 | 17:04 | 17:12 | 13 | M2.3 | S20E65 | 8355 |
| 1998-10-07 | 12:42 | 12:47 | 11 | M1.6 | S22E68 | 8355 |
| 1998-10-17 | 18:39 | 18:51 | 19 | C9.1 | N14W51 | 8358 |
| 1998-10-17 | 23:51 | 00:01 | 36 | C8.1 | N16W51 | 8358 |
| 1998-10-10 | 13:11 | 13:18 | 12 | C7.9 | – | – |
| 1998-10-20 | 20:30 | 21:03 | 78 | C7.4 | – | – |
| 1998-10-19 | 12:18 | 12:31 | 23 | C7.1 | N14W59 | 8361 |
| 1998-10-17 | 22:17 | 22:28 | 21 | C5.1 | N14W54 | 8358 |
| 1998-10-20 | 01:44 | 01:50 | 9 | C5.1 | – | – |
| 1998-10-08 | 08:21 | 08:37 | 20 | C4.5 | – | – |
| 1998-10-07 | 16:11 | 16:16 | 9 | C4.2 | S22E68 | 8355 |
| 1998-10-07 | 17:55 | 17:58 | 6 | C3.5 | S22E67 | 8355 |
| 1998-10-08 | 16:54 | 16:59 | 7 | C3.3 | S23E56 | – |
| 1998-10-20 | 14:21 | 14:29 | 16 | C3.3 | – | – |
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.
← September 1998November 1998 →
About this page
83 flares of class C or larger in October 1998; by M/X count it ranks 355 of 565 months.