Top 50 geomagnetic storms of 1973

On this page you will find an overview of the strongest geomagnetic storms of 1973 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
1	1973/04/01	-211nT	91	8+
2	1973/04/02	-173nT	54	7
3	1973/04/14	-134nT	57	8-
4	1973/02/21	-121nT	49	7+
5	1973/02/22	-107nT	46	6+
6	1973/05/21	-100nT	48	7
7	1973/05/14	-97nT	80	8-
8	1973/09/26	-88nT	25	5+
9	1973/04/03	-84nT	26	5+
10	1973/03/19	-84nT	82	7
11	1973/04/13	-84nT	46	7+
12	1973/09/09	-79nT	44	8-
13	1973/04/16	-79nT	60	6+
14	1973/04/17	-77nT	51	6
15	1973/04/20	-76nT	46	6-
16	1973/02/23	-75nT	48	6-
17	1973/04/19	-75nT	42	6
18	1973/04/29	-74nT	59	6
19	1973/01/21	-72nT	22	5
20	1973/10/03	-72nT	48	7+
21	1973/03/20	-71nT	80	7-
22	1973/04/15	-71nT	9	3-
23	1973/04/22	-71nT	44	6
24	1973/02/24	-68nT	54	6
25	1973/12/04	-67nT	29	6
26	1973/04/11	-67nT	24	5-
27	1973/04/21	-66nT	42	5+
28	1973/04/23	-65nT	25	5-
29	1973/04/27	-64nT	26	5-
30	1973/10/29	-64nT	86	7
31	1973/10/30	-63nT	28	6-
32	1973/04/18	-63nT	46	5+
33	1973/11/21	-63nT	23	6-
34	1973/04/26	-62nT	28	6-
35	1973/05/22	-61nT	21	5
36	1973/09/23	-61nT	63	7
37	1973/03/23	-60nT	50	6-
38	1973/03/31	-60nT	33	6
39	1973/03/21	-59nT	58	6
40	1973/10/31	-59nT	19	5
41	1973/11/24	-59nT	26	5+
42	1973/04/04	-58nT	9	3
43	1973/06/11	-58nT	34	5+
44	1973/03/02	-58nT	40	5
45	1973/03/22	-57nT	53	6
46	1973/04/25	-57nT	14	4
47	1973/03/24	-57nT	49	6-
48	1973/03/25	-57nT	50	5+
49	1973/06/10	-54nT	33	6+
50	1973/03/29	-54nT	16	4+

Latest news

Sunday, 8 December 2024

X2.2 solar flare, SDO outage

Thursday, 21 November 2024

Major far side eruption, S1 radiation storm

Monday, 11 November 2024

Coronal hole faces Earth

More news

Latest forum messages

jsoc 60 Filaments and prominences 594 Unexplained proton activity 3 Changelog/Featurelog 162 Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 1

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

SpaceWeatherLive Pro

Support SpaceWeatherLive with our merchandise

Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare	2024/12/08	X2.2
Last M-flare	2024/12/21	M1.9
Last geomagnetic storm	2024/12/17	Kp5+ (G1)

Spotless days
Last spotless day	2022/06/08

Monthly mean Sunspot Number
November 2024	152.5 -13.9
December 2024	100.9 -51.6
Last 30 days	116.1 -38.9

This day in history*

Solar flares
1	2023	M4.2
2	2015	M4.07
3	2024	M1.9
4	2014	M1.79
5	1999	M1.61

		Dst	G
1	2015	-159	G3
2	2002	-75	G2
3	2001	-67
4	1980	-64	G1
5	1982	-64	G1

*since 1994

Social networks

SpaceWeatherLive