Solar Cycle 23 - Top 50 geomagnetic storms

On this page you will find an overview of the strongest geomagnetic storms from Solar Cycle 23 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. The Ap-index provides a daily average level for geomagnetic activity. The Ap-index is thus a storm-index where long geomagnetic storms have a higher daily Ap-value. This page is updated daily. Times are in UTC.

Ap 00-03h03-06h06-09h09-12h12-15h15-18h18-21h21-00hKp max
12003/10/292045-4988-8-9-9-9View archive
22001/03/311927-9-9-6+788+7+9-View archive
32003/10/301919-7+5+5-57999View archive
42004/07/271868+8-7+89-8+6+69-View archive
52000/07/1516434-5-4+89-99-9View archive
62004/11/101618-8+9-8+7+6+5+4+9-View archive
72004/07/2515477+6+8-7+87+7+8View archive
82003/11/2015014-6+6+8-9-9-89-View archive
91998/08/27144888-7-7-7-76+8View archive
102001/11/061429-9-755+7-6+6+9-View archive
112004/11/081409-9-8+753-4+5+9-View archive
122000/08/1212357+8-8-7+7+6+4-8-View archive
132004/11/091196-65677-9-79-View archive
141998/09/251178-88+76+6-3-2+8+View archive
152003/10/311168+8-7+7-7+5-44+8+View archive
162000/10/051165+7-8-7+8-7-6+58-View archive
172003/05/2910944-4-378-8+8+8+View archive
182003/08/181086-6+77-77+6+67+View archive
192001/11/241043+5+8+78-7+35-8+View archive
202005/08/241023-3+6+9-7+7-6+4+9-View archive
212005/09/111016+78-6+75+65-8-View archive
221998/05/0410169-8+6-64-2+39-View archive
232001/10/229675-4-667+777+View archive
242006/12/15948+8-7-6-6444-8+View archive
252000/05/249388-66-5564+8View archive
262005/05/089165+4-68+8-5+4-8+View archive
271999/10/229178-85+5-4+6-3+8View archive
282005/05/309043+6+6+7+8-7-5-8-View archive
292005/05/15876-6-8+8-44558+View archive
302001/04/118532+224-88-8+8+View archive
312005/01/188476-8-6-5+5+56-8-View archive
322000/04/06822-4+3-2+3+7-8+8+8+View archive
331999/02/18805-67-7-7-5+657-View archive
342002/05/23783-3-27-8-8+53+8+View archive
352005/09/12755-4+76-5-6677View archive
361998/11/09755-6-7-6+65+7-5-7-View archive
372001/03/20745-6-66-7+74+4-7+View archive
382000/04/07749-66444+4-4-9-View archive
392003/09/17705+5+56+75+56-7View archive
402002/04/207077+6-4+565-3-7+View archive
412000/09/18708-6-5666338-View archive
422001/10/036953+577-7-5-57View archive
432002/10/01672-3-5-6-7-7+5-7-7+View archive
442005/01/21663+22+2+3-7-87+8View archive
452003/10/14663+46-54+4+7+7+7+View archive
461998/11/086668-7+5-43+3-3+8-View archive
472006/04/14654+67-755+44+7View archive
482004/01/226455577-45+5-7View archive
492002/10/04647+6-65-44-6+4+7+View archive
502000/06/08643-4-4+6+76+657View archive

Latest news

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!

100%

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/09/02Kp5 (G1)
Number of spotless days in 2019:186
Current stretch spotless days:16

This day in history*

Solar flares
12001M1.4
22001M1.4
32001M1.3
42014M1.2
52001M1.0
ApG
1200070G4
2200350G2
3199825G1
4200623G1
5201720
*since 1994

Social networks