Sunspot AR3664 Returns, Potential for More Powerful Solar Storms

The sunspot responsible for May's historic geomagnetic storm is back, raising the possibility of more auroras and technological disruptions.

Sunspot AR3664, which caused a G5 geomagnetic storm earlier this month, is once again visible on the sun's surface.
The sunspot has already produced a significant X2.9-class solar flare, indicating continued high activity.
Scientists are monitoring the sunspot for potential coronal mass ejections (CMEs) that could impact Earth.
The previous storm resulted in widespread auroras and disruptions to power grids and radio communications.
Experts suggest watching for auroras around June 6, when the sunspot will be fully Earth-facing.