Solar Flare WatchSolar flares in 1998
C1188
M94
X14
LargestX4.91998-08-18
M/X flares by month
- January 1998
- February 1998
- March 1998
- April 1998
- May 1998
- June 1998
- July 1998
- August 1998
- September 1998
- October 1998
- November 1998
- December 1998
Nearby years (M + X)
74
25
11
5
24
108
174
232
331
231
180
Top 20 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1998-08-18 | 22:10 | 22:19 | 18 | X4.9 | N33E87 | 8307 |
| 1998-08-19 | 21:35 | 21:45 | 15 | X3.9 | N32E75 | – |
| 1998-11-22 | 06:30 | 06:42 | 19 | X3.7 | S27W82 | – |
| 1998-11-28 | 04:54 | 05:52 | 79 | X3.3 | N17E32 | – |
| 1998-08-18 | 08:14 | 08:24 | 18 | X2.8 | N33E68 | 8307 |
| 1998-05-06 | 07:58 | 08:09 | 22 | X2.7 | S11W65 | – |
| 1998-11-22 | 16:10 | 16:23 | 22 | X2.5 | S30W89 | – |
| 1998-11-23 | 06:28 | 06:44 | 30 | X2.2 | S28W89 | 8384 |
| 1998-04-23 | 05:35 | 05:55 | 48 | X1.2 | – | – |
| 1998-08-17 | 21:10 | 21:20 | 20 | X1.2 | – | – |
| 1998-05-02 | 13:31 | 13:42 | 20 | X1.1 | S15W15 | 8210 |
| 1998-04-27 | 08:55 | 09:20 | 43 | X1.0 | S16E50 | 8210 |
| 1998-08-24 | 21:50 | 22:12 | 45 | X1.0 | N35E09 | 8307 |
| 1998-11-24 | 02:07 | 02:20 | 30 | X1.0 | – | – |
| 1998-08-21 | 23:57 | 00:09 | 19 | M9.0 | N42E51 | – |
| 1998-11-05 | 19:00 | 19:55 | 72 | M8.4 | N22W18 | – |
| 1998-12-18 | 17:13 | 17:22 | 14 | M8.0 | – | 8415 |
| 1998-05-09 | 03:04 | 03:40 | 51 | M7.7 | – | – |
| 1998-09-23 | 06:40 | 07:13 | 51 | M7.1 | N18E09 | 8340 |
| 1998-04-29 | 16:06 | 16:37 | 53 | M6.8 | S18E20 | 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
1,296 flares of class C+ in 1998: 94 M-class and 14 X-class.