A powerful X-class solar flare has unleashed a severe geomagnetic storm, arriving faster and stronger than predicted. Join Weather Network's Kim MacDonald and meteorologist Scott Sutherland as they explain the science behind the storm,

The sun sure has woken up this week, unleashing a powerful X-class solar flare on Jan. 18 that hurled a colossal, fast-moving coronal mass ejection (CME) directly toward Earth. That CME has now arrived, triggering severe (G4) geomagnetic storm conditions far earlier than initially forecast.

Severe weather events can be deadly for vulnerable older adults long after initial disruptions end, according to a new study led by the University of Michigan.