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Solar flares in April 1998
C-class69
M-class4
X-class2
LargestX1.21998-04-23
Sunspot number73.6NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| April 1997 | 9 | 1 | 0 | M1.9 |
| April 1998 | 69 | 4 | 2 | X1.2 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1998-04-23 | 05:35 | 05:55 | 48 | X1.2 | – | – |
| 1998-04-27 | 08:55 | 09:20 | 43 | X1.0 | S16E50 | 8210 |
| 1998-04-29 | 16:06 | 16:37 | 53 | M6.8 | S18E20 | 8210 |
| 1998-04-20 | 09:38 | 10:21 | 100 | M1.4 | – | – |
| 1998-04-06 | 16:23 | 16:48 | 32 | M1.1 | S30E78 | 8195 |
| 1998-04-05 | 16:22 | 16:39 | 48 | M1.0 | S20E84 | 8194 |
| 1998-04-15 | 14:58 | 15:11 | 22 | C9.9 | N31W19 | 8203 |
| 1998-04-16 | 01:02 | 01:11 | 15 | C9.5 | – | – |
| 1998-04-24 | 08:34 | 08:52 | 20 | C8.9 | – | – |
| 1998-04-15 | 07:37 | 07:46 | 17 | C8.8 | N29W15 | 8203 |
| 1998-04-15 | 11:55 | 12:33 | 47 | C8.2 | N27W19 | 8203 |
| 1998-04-03 | 23:35 | 23:50 | 27 | C6.7 | – | 8190 |
| 1998-04-30 | 21:15 | 21:25 | 21 | C6.6 | S21E03 | 8210 |
| 1998-04-04 | 07:39 | 07:57 | 55 | C6.2 | – | – |
| 1998-04-08 | 21:32 | 21:38 | 9 | C5.7 | S24E43 | 8194 |
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
75 flares of class C or larger in April 1998; by M/X count it ranks 298 of 565 months.