7 votes The great geomagnetic storm of May 1921 Posted May 13, 2020 by asteroid Tags: solar system, history, sunspots, 1920s, sun, weather.space, storms.solar, storms.geomagnetic, author.tony phillips, source.spaceweatherarchive https://spaceweatherarchive.com/2020/05/12/the-great-geomagnetic-storm-of-may-1921/ Link information This data is scraped automatically and may be incorrect. Authors Dr.Tony Phillips Published May 12 2020 Word count 834 words