Solar Cycle 23 - Top 50 solar flares

On this page you will find an overview of the strongest solar flares from Solar Cycle 23 together with links to more information in our archive and a video (if available) of the event. This page is updated daily.

RegionStartMaximumEnd
1X28.02003/11/04048619:2919:5320:06
2X20.02001/04/02939321:3221:5122:03
3X17.22003/10/28048609:5111:1011:24
4X17.02005/09/07080817:1717:4018:03
5X14.42001/04/15941513:1913:5013:55
6X10.02003/10/29048620:3720:4921:01
7X9.41997/11/06810011:4911:5512:01
8X9.02006/12/05093010:1810:3510:45
9X8.32003/11/02048617:0317:2517:39
10X7.12005/01/20072006:3607:0107:26
11X6.52006/12/06093018:2918:4719:00
12X6.22005/09/09080819:1320:0420:36
13X6.22001/12/13973314:2014:3014:35
14X5.72000/07/14907710:0310:2410:43
15X5.62001/04/06941519:1019:2119:31
16X5.42003/10/23048608:1908:3508:49
17X5.42005/09/08080820:5221:0621:17
18X5.32001/08/25959116:2316:4517:04
19X4.91998/08/18830722:1022:1922:28
20X4.82002/07/23003900:1800:3500:47
21X4.02000/11/26923616:3416:4816:56
22X3.91998/08/19830721:3521:4521:50
23X3.92003/11/03048809:4309:5510:19
24X3.82005/01/17072006:5909:5210:07
25X3.71998/11/22838406:3006:4206:49
26X3.62003/05/28036500:1700:2700:39
27X3.62004/07/16064913:4913:5514:01
28X3.62005/09/09080809:4209:5910:08
29X3.42006/12/13093002:1402:4002:57
30X3.42001/12/28976720:0220:4521:32
31X3.31998/11/28839504:5405:5206:13
32X3.32002/07/20003921:0421:3021:54
33X3.12002/08/24006900:4901:1201:31
34X3.02002/07/15003019:5920:0820:14
35X2.81998/08/18830708:1408:2408:32
36X2.82001/12/11973307:5808:0808:14
37X2.71998/05/06821007:5808:0908:20
38X2.72003/11/03048801:0901:3001:45
39X2.62005/01/15072022:2523:0223:31
40X2.61997/11/27811312:5913:1713:20
41X2.62001/09/24963209:3210:3811:09
42X2.51998/11/22838416:1016:2316:32
43X2.52004/11/10069601:5902:1302:20
44X2.32000/06/06902614:5815:2515:40
45X2.32000/11/24923614:5115:1315:21
46X2.32001/04/10941505:0605:2605:42
47X2.21998/11/23838406:2806:4406:58
48X2.11997/11/04810005:5205:5806:02
49X2.12002/05/20996115:2115:2715:31
50X2.12005/09/10080821:3022:1122:43

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/05/14Kp7 (G3)
Number of spotless days in 2019:76
Current stretch spotless days:3

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*since 1994

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