Top 50 geomagnetic storms of 2021

On this page you will find an overview of the strongest geomagnetic storms of 2021 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	Speed	IMF Bt	IMF Bz
1	2021/11/04	-105nT	72	8-	817.3km/sec	24.09nT	-18.08nT
2	2021/08/27	-82nT	21	4+	525.4km/sec	16.44nT	-15.50nT
3	2021/08/28	-79nT	14	5	389.3km/sec	12.86nT	-8.97nT
4	2021/10/12	-65nT	46	6+	521.2km/sec	17.66nT	-16.33nT
5	2021/09/17	-64nT	23	5+	421.4km/sec	15.40nT	-13.40nT
6	2021/05/12	-61nT	42	7	543.5km/sec	23.51nT	-19.69nT
7	2021/03/01	-58nT	25	6-	538.1km/sec	14.43nT	-13.85nT
8	2021/10/18	-55nT	9	3+	385.6km/sec	12.93nT	-7.48nT
9	2021/10/17	-55nT	10	4	419.0km/sec	12.13nT	-8.89nT
10	2021/04/17	-54nT	28	5-	668.4km/sec	12.00nT	-9.67nT
11	2021/04/26	-53nT	12	4+	526.7km/sec	7.81nT	-7.51nT
12	2021/04/16	-48nT	19	5	512.0km/sec	13.14nT	-10.99nT
13	2021/03/20	-45nT	27	6-	676.1km/sec	23.21nT	-19.09nT
14	2021/02/25	-44nT	14	4	503.4km/sec	6.33nT	-5.42nT
15	2021/01/11	-44nT	12	4	483.1km/sec	20.18nT	-18.31nT
16	2021/10/13	-43nT	5	3+	462.9km/sec	5.03nT	-2.39nT
17	2021/12/01	-43nT	18	4	576.6km/sec	8.88nT	-8.24nT
18	2021/03/14	-43nT	23	5	596.8km/sec	6.06nT	-5.68nT
19	2021/04/25	-41nT	18	5	503.2km/sec	9.86nT	-7.95nT
20	2021/07/22	-41nT	8	3+	497.6km/sec	7.71nT	-7.43nT
21	2021/01/26	-41nT	11	4	626.1km/sec	9.62nT	-9.04nT
22	2021/11/05	-40nT	11	4-	627.1km/sec	14.52nT	-2.79nT
23	2021/08/25	-40nT	8	3+	407.2km/sec	11.58nT	-8.78nT
24	2021/01/12	-39nT	9	4-	487.6km/sec	7.29nT	-4.87nT
25	2021/02/24	-39nT	19	4+	525.5km/sec	9.53nT	-7.97nT
26	2021/10/11	-39nT	14	4-	415.5km/sec	11.62nT	-9.15nT
27	2021/03/03	-39nT	19	5-	691.5km/sec	7.10nT	-6.31nT
28	2021/08/07	-38nT	10	3-	500.5km/sec	12.59nT	-8.45nT
29	2021/08/02	-38nT	15	5-	417.3km/sec	13.53nT	-12.64nT
30	2021/06/11	-37nT	8	3-	366.8km/sec	8.34nT	-7.96nT
31	2021/11/06	-36nT	17	4	633.9km/sec	10.48nT	-4.16nT
32	2021/05/13	-36nT	6	2	536.7km/sec	14.52nT	-6.70nT
33	2021/12/19	-36nT	14	5	494.8km/sec	23.92nT	-20.72nT
34	2021/09/18	-36nT	8	3+	429.8km/sec	14.90nT	-5.10nT
35	2021/02/21	-36nT	20	4+	623.5km/sec	7.73nT	-6.52nT
36	2021/10/31	-36nT	14	4	464.7km/sec	13.47nT	-11.35nT
37	2021/08/03	-35nT	8	4-	442.1km/sec	8.48nT	-6.34nT
38	2021/02/19	-35nT	15	4	539.3km/sec	14.52nT	-10.90nT
39	2021/05/20	-34nT	24	5+	584.3km/sec	18.51nT	-14.25nT
40	2021/12/02	-34nT	9	3	539.4km/sec	5.89nT	-5.25nT
41	2021/02/20	-34nT	21	4+	620.2km/sec	12.47nT	-8.02nT
42	2021/03/21	-34nT	22	5-	682.4km/sec	7.93nT	-7.51nT
43	2021/07/15	-34nT	8	3-	492.6km/sec	9.12nT	-6.38nT
44	2021/02/16	-34nT	12	4	460.9km/sec	11.74nT	-9.03nT
45	2021/04/18	-33nT	17	4-	654.3km/sec	7.94nT	-5.84nT
46	2021/03/02	-33nT	20	5	677.1km/sec	12.03nT	-7.37nT
47	2021/10/19	-33nT	12	4	423.8km/sec	10.18nT	-7.44nT
48	2021/07/14	-33nT	14	4+	422.2km/sec	13.34nT	-11.42nT
49	2021/01/25	-33nT	15	5-	560.9km/sec	11.09nT	-9.90nT
50	2021/10/14	-32nT	6	2+	407.1km/sec	8.77nT	-6.02nT

Current data suggests there is a high possibility for aurora to appear at the following high latitude regions in the near future

Gillam, MB, Whitehorse, YT, Yellowknife, NT
Fairbanks, AK, Utqiagvik, AK

Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future

Edmonton, AB, Iqaluit, NU, Saskatoon, SK
Nuuk
Anchorage, AK, Juneau, AK

Current data suggests there is a slight possibility for aurora to appear at the following middle latitude regions in the near future

Calgary, AB, Winnipeg, MB

The solar wind speed is currently moderately high (621.25 km/sec.)

The direction of the interplanetary magnetic field is slightly South (-5.72nT).

The Disturbance Storm Time index predicts moderate storm conditions right now (-73nT)

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