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Solar flares in May 1998
C-class141
M-class15
X-class2
LargestX2.71998-05-06
Sunspot number74.3NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| May 1997 | 6 | 1 | 0 | M1.3 |
| May 1998 | 141 | 15 | 2 | X2.7 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1998-05-06 | 07:58 | 08:09 | 22 | X2.7 | S11W65 | – |
| 1998-05-02 | 13:31 | 13:42 | 20 | X1.1 | S15W15 | 8210 |
| 1998-05-09 | 03:04 | 03:40 | 51 | M7.7 | – | – |
| 1998-05-29 | 00:51 | 00:59 | 12 | M6.7 | – | – |
| 1998-05-10 | 13:13 | 13:20 | 10 | M3.9 | S29E88 | – |
| 1998-05-08 | 01:49 | 02:04 | 28 | M3.1 | – | – |
| 1998-05-06 | 07:10 | 07:25 | 31 | M2.9 | S11W65 | 8210 |
| 1998-05-07 | 11:05 | 11:16 | 22 | M2.9 | N29W47 | 8214 |
| 1998-05-05 | 23:27 | 23:46 | 35 | M2.5 | S16W60 | 8210 |
| 1998-05-08 | 13:50 | 14:15 | 47 | M1.8 | – | – |
| 1998-05-10 | 08:15 | 08:26 | 30 | M1.6 | – | – |
| 1998-05-03 | 21:12 | 21:29 | 37 | M1.4 | S13W34 | 8214 |
| 1998-05-08 | 05:53 | 06:08 | 33 | M1.4 | – | – |
| 1998-05-07 | 13:31 | 13:50 | 34 | M1.3 | N28W47 | 8218 |
| 1998-05-01 | 22:36 | 22:54 | 32 | M1.2 | N25E35 | 8210 |
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
158 flares of class C or larger in May 1998; by M/X count it ranks 176 of 565 months.