How long do the Auroras last?
A typical auroral ‘storm’ lasts a few hours, but a major storm period can cause aurora to reappear mant times over a few days. It depends on how tangled and disturbed earth’s magnetic field gets. The best times to look for aurora are near midnight, and they often appear within 2 hours or so of that time. They go through definite stages as they evolve from start tgo finish. Dr.