SpaceWeatherLive .com
Real-time auroral and solar activity

Solar Cycle 18 - Top 50 geomagnetic storms

On this page you will find an overview of the strongest geomagnetic storms from Solar Cycle 18 together with links to more information in our archive. The Kp-values on this page are the official, finalized Kp-values from the GFZ in Potsdam, Germany. Times are in UTC.

Ap Kp max00-03h03-06h06-09h09-12h12-15h15-18h18-21h21-00h
11946/09/2219894-8+8-9-98+76
21946/07/2715299-9-97-5+4-4-2+
31946/03/282139-568+9-9-9-8+8
41946/03/251959-8-7+7+8-8+9-8-8-
51949/01/251569-9-87-4+568+8+
61949/05/121539-227+7+8+9-8+7
71946/02/081189-9-8-7+76-6-43
81946/04/231179-4-45+66+8-8-9-
91947/04/171009-4-4-2-2-6+7-9-8+
101951/10/28989-0+4-3+5+789-5
111946/07/26799-4-434-3+3+9-8
121950/02/20799-2+3-2-2+359-8+
131951/09/26739-9-8-4+4-3-3+2+3-
141949/10/151568+667+87+7+8+8-
151948/03/151408+6-8+87+6+78-5
161950/08/191368+6-4+6-6+88+8-8
171947/03/031288+757-76+6-8+8
181946/02/071278+4-248+8-878
191951/09/251168+4-5-5-5+7+8-88+
201950/08/201088+8+88-8-43+2+2
211949/01/261008+8+876-555-4
221946/04/24998+8+7+7-6+4+7-5-3+
231952/04/21948+3-3+448+876+
241944/04/02888+4+588+6454
251948/10/18868+8+7-5+4-4-45+7+
261944/12/16838+44-4+688+53
271947/08/22718+3-458+6+65-4+
281948/10/17358+10+3+1+0+0+2+8+
291946/09/2314687+8-86+7867-
301946/03/24117888-56-7+83+5+
311952/03/0682887+6+5-4+455+
321952/06/307885+88-74-2+2-2+
331952/05/2772886-5-5+4+5+6-5
341947/07/1768811-1-21+788-
351949/05/1359887+3+25+3+12+
361951/06/173882+1+2-11-5-4+8
371948/08/081468-5+7-7+8-8-78-8-
381946/09/181368-7+7+8-7777+5
391947/09/251008-8-7+7+666-55-
401948/10/19948-7-7+8-7+5+5+4+2+
411949/10/14918-4-4+56+6-7+8-7
421949/03/22908-78-7-7-5-6-6-3+
431947/03/08908-23+5+6-8-7+7-7
441951/07/02828-7+8-7-645-45-
451952/03/31808-8-67-5+465+5
461950/02/21798-7+8-6+5-5+5-4+5-
471950/08/08718-8-6+8-53+3-3-4
481951/04/18668-114+78-655
491951/09/19598-32+4-4-5+8-75-
501953/05/15558-133-2+5+5+8-7-
© Potsdam - CC BY 4.0 - Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O. and Morschhauser, A., 2021. - ©WDC for Geomagnetism, Kyoto
Back to top

Latest news

Latest forum messages

AR 13932 64jsoc 662024/12/23 CME by AR 13932's M8.9 flare. 7Changelog/Featurelog 163Incoming & Unnumbered Active Regions 1366
More topics

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-flare2024/12/08X2.2
Last M-flare2024/12/24M1.3
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024110.7 -41.8
Last 30 days117.3 -41.4

This day in history*

Solar flares
12001M5
22024M4.7
32024M4.1
42023M2.9
52023M2.6
DstG
11995-65G1
22014-57
32001-55G1
42002-49G1
51990-47
*since 1994

Social networks

SpaceWeatherLive