# May 1921 geomagnetic storm

> exceptionally powerful geomagnetic storm

**Wikidata**: [Q6796269](https://www.wikidata.org/wiki/Q6796269)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/May_1921_geomagnetic_storm)  
**Source**: https://4ort.xyz/entity/may-1921-geomagnetic-storm