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Table 1 Geomagnetic storms (minimum Dst < −100 nT) in the rising–maximum phases of cycle 24 with their characteristics

From: Geomagnetic storms of cycle 24 and their solar sources

No. Date Min. Dst (nT) Type Solar sources Speed at 1AU (km/s)
1 2011/08/05 17:50–2011/08/06 15:00 −115*1 SC Full halo CME (sheath) 611
2 2011/09/26 12:35–2011/09/28 17:00 −118*1 SC Full halo CME (sheath) 704
3 2011/10/24 18:31–2011/10/25 21:00 −147*1 SC Full halo CME (sheath, MC) 534
4 2012/03/08 11:03–2012/03/10 19:00 −145*2 SC Full halo CME (sheath, MC) multiple 737
5 2012/04/23 03:20–2012/04/26 16:00 −120*2 SC Partial halo CME (sheath, MC) 394/720
6 2012/07/14 18:10–2012/07/17 12:00 −139*2 SC Full halo CME (sheath, MC) 667
7 2012/09/30 11:32/23:05–2012/10/01 16:00 −122*2 SC Full halo CMEs (sheath, MC) multiple 410
8 2012/10/08 05:16–2012/10/09 24:00 −109*2 SC Partial halo CME (sheath, MC) multiple 447/526
9 2012/11/12 23:12–2012/11/14 19:00 −108*2 SC Partial halo CME (sheath, MC) multiple 467
10 2013/03/17 06:00–2013/03/18 12:00 −132*2 SC Full halo CME (sheath, MC) multiple 725
11 2013/05/31 16:17–2013/06/02 21:00 −119*2 SC (MC?) coronal hole 402/774
12 2014/02/18 13:54–2014/02/19 23:00 −116*2 GC Partial halo CME (MC) multiple 530
13 2015/03/17 04:45–2015/03/21 15:00 −223*2 SC Partial halo CME (sheath, MC) coronal hole? 683
14 2015/06/22 18:33–2015/06/24 12:00 −204*3 SC Full halo CME (sheath, MC) multiple 742
15 2015/10/07 04:24–2015/10/10 02:00 −124*3 GC (MC) coronal hole 460/775
16 2015/12/19 16:17–2015/12/22 02:00 −155*3 SC Full halo CME (MC) 497
17 2015/12/31 00:49–2016/01/01 16:00 −110*3 SC Partial halo CME (MC) 485
  1. SC sudden commencement, GC gradual commencement, MC magnetic cloud
  2. *1Final Dst index
  3. *2Provisional Dst index
  4. *3Real-time Dst index