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Solar Cycle 21 - Top 50 geomagnetic storms

On this page you will find an overview of the strongest geomagnetic storms from Solar Cycle 21 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
11982/07/14-325nT1539
21981/04/13-311nT1218+
31986/02/09-307nT1009-
41982/09/06-289nT1999-
51986/02/08-259nT2029
61980/12/19-240nT798-
71976/03/26-226nT1458
81978/08/28-226nT1248+
91981/07/25-226nT1348+
101978/09/29-224nT1098
111976/04/01-218nT1188+
121981/03/05-215nT817+
131983/01/10-213nT788+
141982/03/02-211nT1078
151982/09/22-210nT1358+
161979/04/04-202nT477-
171981/07/26-197nT788
181982/11/24-197nT837+
191981/10/20-192nT677
201982/11/25-192nT547-
211982/09/07-188nT887+
221982/09/26-187nT847+
231981/10/22-185nT727
241983/02/05-183nT1438
251982/07/13-178nT1449
261983/02/04-172nT598-
271980/12/20-171nT214+
281979/04/03-168nT548
291983/03/02-167nT867
301981/04/12-163nT967
311977/10/28-159nT477+
321979/09/18-158nT647
331985/04/21-158nT1038+
341982/03/01-155nT688
351982/08/07-155nT1078-
361982/09/27-155nT427-
371978/05/04-152nT968-
381978/05/01-150nT888+
391978/11/25-149nT607
401979/04/25-149nT1268
411981/10/23-149nT276-
421983/08/08-149nT628-
431985/11/29-147nT377-
441978/05/02-145nT947+
451984/11/16-141nT1128
461979/03/10-140nT547
471979/08/29-140nT778-
481981/05/11-137nT617-
491982/04/10-137nT617
501981/03/06-136nT113+
© Potsdam - CC BY 4.0 - Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O. and Morschhauser, A., 2021. - ©WDC for Geomagnetism, Kyoto
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