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Solar Cycle 20 - Top 50 geomagnetic storms

On this page you will find an overview of the strongest geomagnetic storms from Solar Cycle 20 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
11967/05/26-387nT1469
21967/05/25-312nT1309
31970/03/08-284nT1499
41970/03/09-258nT476+
51969/03/24-228nT798
61968/10/31-224nT1128
71968/11/01-216nT1228+
81973/04/01-211nT918+
91974/07/06-204nT1309-
101972/11/01-199nT988
111972/06/18-190nT1268+
121966/09/04-189nT1129-
131969/02/02-186nT478
141970/08/17-181nT1159-
151968/11/02-179nT828-
161973/04/02-173nT547
171971/12/17-171nT677+
181969/03/23-164nT478
191965/04/18-162nT688-
201969/02/03-161nT546
211967/01/14-160nT618-
221967/06/06-160nT468
231974/09/15-159nT738-
241966/09/03-157nT929-
251976/01/10-156nT477
261972/08/09-154nT748+
271970/12/14-153nT658+
281972/09/14-146nT548
291976/01/11-146nT417+
301971/04/15-143nT367-
311970/04/21-141nT908+
321974/09/16-141nT888
331970/04/22-137nT417
341969/02/11-136nT626+
351973/04/14-134nT578-
361967/02/16-130nT648
371967/01/08-128nT607-
381968/11/03-125nT357-
391972/08/05-125nT1829-
401968/02/11-124nT516
411967/05/03-123nT877
421972/09/13-123nT537+
431967/05/27-121nT204+
441969/05/15-121nT1318-
451971/04/14-121nT398-
461973/02/21-121nT497+
471967/02/07-120nT306+
481971/12/18-120nT225
491974/10/13-120nT867
501970/10/18-119nT397-
© 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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