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Home > Observation data > Geomagnetic storms - monthly overviews

Geomagnetic storms - monthly overviews

Major geomagnetic storms (ranked): Kakioka, Memambetsu, Kanoya
Brief overview ( geomagnetic storms)

Large geomagnetic field disturbances commence suddenly or gradually. Those with and without a sudden onset are referred to as geomagnetic storm of sudden commencement type and gradual commencement type, respectively. Related changes in geomagnetic fields induce geoelectric currents in the earth.


Numbers in brackets indicate the total of geomagnetic storms observed within the month.

2024

Jan Feb Mar(3) Apr(2) May(4) Jun(1)
Jul Aug(4) Sep(2) Oct(2) Nov Dec

2023

Jan(2) Feb(3) Mar(1) Apr(1) May(2) Jun(1)
Jul(2) Aug(2) Sep(4) Oct(3) Nov(3) Dec(3)

2022

Jan(1) Feb(2) Mar(3) Apr(2) May(1) Jun
Jul(2) Aug(2) Sep(1) Oct(2) Nov(2) Dec(2)

2021

Jan Feb Mar(1) Apr May(1) Jun
Jul Aug(1) Sep(1) Oct(2) Nov(1) Dec

2020

Jan Feb Mar Apr(1) May Jun
Jul Aug Sep Oct Nov Dec

2019

Jan Feb Mar Apr May(2) Jun
Jul Aug(2) Sep Oct(1) Nov Dec

2018

Jan Feb Mar Apr(1) May(1) Jun
Jul Aug(1) Sep(1) Oct Nov(1) Dec

2017

Jan Feb Mar(1) Apr(1) May(1) Jun
Jul(1) Aug(1) Sep(5) Oct Nov(1) Dec

2016

Jan(1) Feb(1) Mar(2) Apr(1) May(1) Jun
Jul Aug(1) Sep(2) Oct(1) Nov Dec

2015

Jan(1) Feb Mar(1) Apr May(1) Jun(2)
Jul(1) Aug(2) Sep(3) Oct(2) Nov(2) Dec(3)

2014

Jan Feb(4) Mar Apr May Jun
Jul Aug(1) Sep(1) Oct Nov(2) Dec

2013

Jan(1) Feb Mar(2) Apr(1) May(1) Jun(1)
Jul(1) Aug Sep Oct(2) Nov(2) Dec(2)

2012

Jan(2) Feb Mar(3) Apr(1) May Jun(1)
Jul(1) Aug(1) Sep(2) Oct(3) Nov(1) Dec

2011

Jan Feb(1) Mar(2) Apr(1) May(1) Jun(1)
Jul Aug(1) Sep(3) Oct(2) Nov(1) Dec

2010

Jan Feb Mar Apr(1) May(1) Jun
Jul Aug(1) Sep Oct Nov Dec

2009

Jan Feb Mar Apr May Jun
Jul(1) Aug Sep Oct Nov Dec

2008

Jan Feb Mar(1) Apr May Jun
Jul Aug Sep(1) Oct(1) Nov Dec

2007

Jan Feb Mar Apr May Jun
Jul(2) Aug Sep Oct Nov(1) Dec(1)

2006

Jan Feb Mar Apr(3) May Jun
Jul(1) Aug(2) Sep Oct Nov(2) Dec(2)

2005

Jan(3) Feb Mar Apr May(4) Jun(2)
Jul Aug(2) Sep(1) Oct Nov Dec

2004

Jan(2) Feb(1) Mar(1) Apr(1) May Jun
Jul(4) Aug(1) Sep Oct Nov(3) Dec

2003

Jan Feb(2) Mar Apr May(1) Jun(4)
Jul(2) Aug(2) Sep(1) Oct(3) Nov(3) Dec(1)

2002

Jan Feb Mar(1) Apr(2) May(2) Jun
Jul Aug(2) Sep(2) Oct(1) Nov(2) Dec(1)

2001

Jan(1) Feb Mar(3) Apr(6) May Jun(1)
Jul Aug(1) Sep(2) Oct(5) Nov(3) Dec

2000

Jan(2) Feb(1) Mar Apr(2) May(2) Jun(1)
Jul(2) Aug(1) Sep(1) Oct(2) Nov(3) Dec

1999

Jan(1) Feb(2) Mar(1) Apr(1) May(2) Jun
Jul(1) Aug Sep(2) Oct(1) Nov(2) Dec(1)

1998

Jan(1) Feb(1) Mar(2) Apr(1) May(2) Jun(1)
Jul(2) Aug(2) Sep(2) Oct(1) Nov(4) Dec(2)

1997

Jan(2) Feb(4) Mar Apr(2) May(2) Jun
Jul Aug(2) Sep(1) Oct(2) Nov(2) Dec(2)

1996

Jan(1) Feb Mar Apr May Jun
Jul Aug Sep Oct(1) Nov Dec

1995

Jan Feb(1) Mar(1) Apr(1) May(1) Jun
Jul Aug Sep(1) Oct(2) Nov(1) Dec(1)

1994

Jan Feb(2) Mar(2) Apr(2) May(1) Jun
Jul Aug Sep Oct(3) Nov(1) Dec(1)

1993

Jan(2) Feb(2) Mar(4) Apr(2) May(1) Jun(1)
Jul Aug(1) Sep(2) Oct(2) Nov(2) Dec(2)

1992

Jan(2) Feb(8) Mar Apr(1) May(2) Jun(1)
Jul(1) Aug(2) Sep(4) Oct(2) Nov(3) Dec(2)

1991

Jan(1) Feb(1) Mar(2) Apr(2) May(3) Jun(6)
Jul(2) Aug(6) Sep(2) Oct(5) Nov(4) Dec

1990

Jan Feb(3) Mar(5) Apr(6) May(3) Jun(2)
Jul(2) Aug(3) Sep(1) Oct(1) Nov(2) Dec


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