The aurora borealis could be seen as far south as Alabama and California on Thursday night, and the surge of solar particles could extend into Friday too.
More information: Ying D. Liu et al, A Pileup of Coronal Mass Ejections Produced the Largest Geomagnetic Storm in Two Decades, The Astrophysical Journal Letters (2024). DOI: 10.3847/2041-8213/ad7ba4 ...