The solar storms of May 2024 are a series of powerful solar storms with intense to extreme solar flare and geomagnetic storm components that have been ongoing since 10 May 2024 during solar cycle 25. The geomagnetic storm was the most powerful to affect Earth since 2003, and produced aurorae at far lower latitudes than usual in both northern and southern hemispheres.
Solar flares and coronal mass ejections
On 8 May 2024, a solar active region which had been assigned the NOAA region number 3664 produced an X1.0-class and multiple M-class solar flares and launched several coronal mass ejections (CMEs) toward Earth. On 9 May, the active region produced an X2.25- and X1.12-class flare each associated with a full-halo CME. On 10 May, the region produced an X3.98-class flare, and on 11 May at 01:23 UTC it produced another X-class flare of magnitude 5.4–5.7 with another asymmetrical full-halo CME. The region also caused an S1 solar radiation storm with spikes reaching S2.
Geomagnetic storm
Three CMEs from 8 May reached...