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

Saturday, 1 June 2024

Double impulsive X-class flares

Wednesday, 29 May 2024

X1.4 solar flare from sunspot region 3697

Monday, 27 May 2024

X2.9 solar flare, Welcome back 3664?

More news

Latest forum messages

Region 3697 2024/06/01 CMEs 96 AR 3697 319 Region 3697 2024/05/29 CME 16 Unproven theories 591 [Forum] Become a SWL Community supporter! 17

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!

76%

Support SpaceWeatherLive with our merchandise

Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare	2024/06/01	X1.03
Last M-flare	2024/06/02	M1.9
Last geomagnetic storm	2024/05/17	Kp6 (G2)

Spotless days
Last spotless day	2022/06/08

Monthly mean Sunspot Number
April 2024	136.5 +31.6
June 2024	194 +57.5
Last 30 days	150 +4.1

This day in history*

Solar flares
1	2000	X1.09
2	2003	M9.36
3	2000	M5.9
4	2003	M5.64
5	2007	M3.68

		Ap	G
1	1978	82	G3
2	1991	60	G3
3	1953	49	G2
4	2003	38	G1
5	1971	31	G1

*since 1994

Social networks

SpaceWeatherLive