Top 50 tempestes geomagnètiques de 2017

On this page you will find an overview of the strongest geomagnetic storms of 2017 together with links to more information in our archive. Storms are ranked by the Disturbance storm-time index (Dst) that is designed to measure the magnetic signature of magnetospheric currents observed in the equatorial regions. The Dst index is provided by the World Data Center for geomagnetism in Kyoto.

		Dst	Ap	Kp max	Velocitat	IMF Bt	IMF Bz
1	2017/05/28	-125nT	49	7	395.5km / seg	20.79nT	-19.88nT
2	2017/09/08	-122nT	106	8+	875.2km / seg	27.65nT	-25.77nT
3	2017/11/08	-73nT	44	6+	699.0km / seg	8.50nT	-7.43nT
4	2017/07/16	-72nT	44	6	643.4km / seg	27.85nT	-23.50nT
5	2017/09/09	-72nT	3	2+	785.3km / seg	5.84nT	-2.59nT
6	2017/11/07	-71nT	35	6+	692.1km / seg	22.90nT	-15.01nT
7	2017/03/27	-70nT	46	6+	720.3km / seg	19.31nT	-14.69nT
8	2017/09/07	-68nT	36	8-	750.7km / seg	34.00nT	-32.99nT
9	2017/07/17	-61nT	26	6-	779.1km / seg	13.02nT	-10.63nT
10	2017/03/01	-61nT	35	6-	748.6km / seg	21.45nT	-17.50nT
11	2017/03/28	-59nT	27	5+	791.9km / seg	7.70nT	-7.26nT
12	2017/09/28	-56nT	51	7-	751.7km / seg	13.25nT	-9.77nT
13	2017/10/14	-53nT	30	5	757.8km / seg	8.71nT	-7.16nT
14	2017/03/31	-51nT	27	5-	770.5km / seg	6.54nT	-6.38nT
15	2017/04/22	-51nT	47	6-	775.9km / seg	9.82nT	-8.33nT
16	2017/08/31	-51nT	30	5+	718.7km / seg	31.48nT	-19.01nT
17	2017/03/02	-50nT	32	5+	752.9km / seg	6.56nT	-6.00nT
18	2017/08/23	-48nT	23	5-	509.5km / seg	7.79nT	-6.87nT
19	2017/04/23	-48nT	36	5+	812.7km / seg	9.61nT	-7.61nT
20	2017/11/09	-48nT	18	4-	622.6km / seg	8.23nT	-6.10nT
21	2017/10/13	-47nT	37	6-	737.8km / seg	9.54nT	-8.56nT
22	2017/10/26	-46nT	17	4+	606.9km / seg	6.54nT	-5.88nT
23	2017/03/03	-45nT	18	4	762.1km / seg	6.61nT	-5.55nT
24	2017/11/10	-45nT	20	4	719.3km / seg	8.40nT	-6.80nT
25	2017/12/04	-45nT	10	4	434.3km / seg	13.75nT	-12.26nT
26	2017/10/15	-45nT	25	5+	698.9km / seg	5.64nT	-5.53nT
27	2017/02/01	-44nT	28	5	772.8km / seg	7.88nT	-6.98nT
28	2017/04/04	-44nT	19	5-	487.9km / seg	16.40nT	-13.67nT
29	2017/09/27	-44nT	37	6+	713.8km / seg	17.04nT	-16.58nT
30	2017/03/29	-42nT	20	4+	763.4km / seg	5.10nT	-4.68nT
31	2017/04/24	-42nT	19	4	795.8km / seg	6.21nT	-5.46nT
32	2017/11/21	-42nT	27	5	638.8km / seg	15.46nT	-13.64nT
33	2017/10/12	-41nT	26	5	596.2km / seg	9.96nT	-8.10nT
34	2017/03/30	-40nT	19	4+	729.8km / seg	6.50nT	-5.82nT
35	2017/05/20	-39nT	22	4+	748.9km / seg	14.34nT	-11.70nT
36	2017/04/20	-39nT	28	6-	657.0km / seg	12.62nT	-12.14nT
37	2017/05/29	-39nT	9	4	526.1km / seg	17.63nT	-13.40nT
38	2017/07/18	-39nT	6	3	743.1km / seg	10.96nT	-8.25nT
39	2017/08/27	-38nT	8	3	533.9km / seg	9.94nT	-9.26nT
40	2017/03/23	-38nT	9	4	-	-	-
41	2017/04/21	-38nT	17	5	690.9km / seg	14.00nT	-12.25nT
42	2017/09/10	-37nT	4	3	786.9km / seg	7.60nT	-5.68nT
43	2017/04/25	-37nT	10	3	713.9km / seg	5.57nT	-4.49nT
44	2017/03/04	-36nT	20	4+	786.1km / seg	5.35nT	-5.30nT
45	2017/10/11	-36nT	28	5-	530.4km / seg	12.76nT	-10.39nT
46	2017/08/19	-35nT	29	5-	813.7km / seg	7.58nT	-7.48nT
47	2017/02/03	-35nT	18	4+	710.8km / seg	5.30nT	-4.81nT
48	2017/09/13	-34nT	14	5+	629.6km / seg	11.53nT	-6.28nT
49	2017/12/05	-34nT	28	5	620.1km / seg	13.43nT	-10.48nT
50	2017/01/05	-34nT	17	4	823.2km / seg	12.12nT	-9.89nT

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Fets del temps al espai

Última Flamarada-X	2026/03/30	X1.5
Última Flamarada-M	2026/03/28	M1.3
Última tempesta geomagnètica	2026/03/25	Kp5+ (G1)

Dies sense taques
Last 365 days	3 dies
2026	3 dies (3%)
Últim dia sense taques	2026/02/24

Número mensual mitjà de taques solars
de febrer 2026	78.2 -34.3
d’abril 2026	130 +51.8
Last 30 days	91.6 +20.3

Aquest dia a la història*

Erupcions solars
1	2001	X28.5
2	2001	X2.01
3	2001	X1.59
4	2014	M9.35
5	2017	M8.22

		Dst	G
1	1960	-272	G3
2	1973	-173	G3
3	2001	-101	G1
4	1976	-101	G1
5	1994	-96	G3

*des del 1994

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