Solar Flare WatchSolar flares in 1990
C2262
M273
X16
LargestX9.31990-05-24
M/X flares by month
- January 1990
- February 1990
- March 1990
- April 1990
- May 1990
- June 1990
- July 1990
- August 1990
- September 1990
- October 1990
- November 1990
- December 1990
Nearby years (M + X)
16
22
30
206
679
289
644
212
74
25
11
Top 20 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1990-05-24 | 20:46 | 20:49 | 59 | X9.3 | N33W78 | 6063 |
| 1990-05-21 | 22:12 | 22:17 | 87 | X5.5 | N35W36 | 6063 |
| 1990-05-11 | 20:58 | 21:00 | 29 | X3.6 | N29E86 | 6063 |
| 1990-05-10 | 19:18 | 19:30 | 70 | X3.4 | – | – |
| 1990-08-27 | 20:37 | 21:05 | 79 | X3.0 | N14E26 | 6233 |
| 1990-05-11 | 05:37 | 05:48 | 29 | X2.4 | – | – |
| 1990-04-16 | 06:30 | 06:36 | 62 | X2.2 | S13E41 | 6021 |
| 1990-12-26 | 13:55 | 14:01 | 93 | X1.9 | S26E21 | 6420 |
| 1990-12-24 | 15:33 | 15:46 | 33 | X1.8 | N10W80 | 6412 |
| 1990-05-15 | 12:46 | 13:10 | 207 | X1.7 | N42E38 | 6063 |
| 1990-03-19 | 04:39 | 05:08 | 101 | X1.5 | N31W43 | 5969 |
| 1990-04-15 | 02:55 | 02:55 | 50 | X1.4 | N32E57 | 6022 |
| 1990-05-26 | 20:45 | 20:58 | 48 | X1.4 | – | – |
| 1990-05-12 | 11:32 | 11:37 | 39 | X1.2 | N31E74 | 6063 |
| 1990-04-03 | 17:05 | 17:22 | 73 | X1.0 | N23E82 | 6007 |
| 1990-12-23 | 09:43 | 10:01 | 46 | X1.0 | N11W68 | 6412 |
| 1990-12-12 | 14:13 | 14:13 | 12 | M8.9 | N10W72 | 6398 |
| 1990-05-23 | 04:01 | 04:20 | 94 | M8.7 | N33W55 | 6063 |
| 1990-10-20 | 17:59 | 18:10 | 22 | M8.5 | N15W82 | 6311 |
| 1990-08-10 | 18:09 | 18:14 | 63 | M7.9 | N20E72 | 6203 |
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
2,551 flares of class C+ in 1990: 273 M-class and 16 X-class.