Solar Flare WatchFlares in solar cycle 22
C12,461
M2,022
X153
LargestX20.01989-08-16
X flares by year
Cycles compared
| Cycle | Start | M | X | Largest |
|---|---|---|---|---|
| 21 | 1976-03 | 2184 | 168 | X13.0 |
| 22 | 1986-09 | 2022 | 153 | X20.0 |
| 23 | 1996-08 | 1436 | 125 | X28.0 |
| 24 | 2008-12 | 733 | 51 | X14.6 |
| 25 | 2019-12 | 1980 | 102 | X8.9 |
Top 20 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1989-08-16 | 01:08 | 01:17 | 80 | X20.0 | S18W84 | 5629 |
| 1989-03-06 | 13:54 | 14:10 | 150 | X15.0 | N35E69 | 5395 |
| 1989-10-19 | 12:29 | 12:55 | 464 | X13.0 | S27E10 | 5747 |
| 1991-06-01 | 15:09 | 15:29 | 65 | X12.0 | N25E90 | 6659 |
| 1991-06-04 | 03:37 | – | 233 | X12.0 | N30E70 | 6659 |
| 1991-06-06 | 00:54 | 01:12 | 81 | X12.0 | N33E44 | 6659 |
| 1991-06-11 | 02:09 | 02:29 | 71 | X12.0 | N31W17 | 6659 |
| 1991-06-15 | 06:33 | 08:31 | 284 | X12.0 | N33W69 | 6659 |
| 1991-01-25 | 06:30 | 06:30 | 8 | X10.0 | S16E78 | 6471 |
| 1991-06-09 | 01:37 | 01:40 | 167 | X10.0 | N34E04 | 6659 |
| 1989-09-29 | 10:47 | 11:33 | 228 | X9.8 | – | 5698 |
| 1991-03-22 | 22:43 | 22:45 | 34 | X9.4 | S26E28 | 6555 |
| 1990-05-24 | 20:46 | 20:49 | 59 | X9.3 | N33W78 | 6063 |
| 1992-11-02 | 02:31 | 03:08 | 57 | X9.0 | – | 7321 |
| 1991-03-04 | 13:56 | 14:03 | 112 | X7.1 | – | – |
| 1989-03-17 | 17:29 | 17:37 | 123 | X6.5 | N33W60 | 5395 |
| 1991-10-27 | 05:38 | 05:49 | 80 | X6.1 | S13E15 | 6891 |
| 1989-10-24 | 17:36 | 18:31 | 528 | X5.7 | S30W57 | 5747 |
| 1988-06-24 | 16:44 | 16:48 | 94 | X5.6 | – | 5047 |
| 1990-05-21 | 22:12 | 22:17 | 87 | X5.5 | N35W36 | 6063 |
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
Cycle 22, which began in September 1986, has 14,636 C+ flares on record, 153 of them X-class.