Geomagnetic Storm 2024 Timeline. The most recent g4 (severe) storm occurred on march 23, 2024, while the halloween storms in october 2003 marked the last g5 (extreme) event. A cme associated with an x1.1 flare observed at 23/0133 utc is expected to arrive at earth late on 24 mar.

The cmes reached earth over the weekend (august. It would spend the next week turning across the visible.