Aurora Australis displays typically last from about 15 to 30 minutes, but can extend to a few hours during stronger geomagnetic storms. The exact duration depends on the intensity and structure of the triggering solar event, the location of observers, and local atmospheric conditions. Short, active showings are common, while particularly powerful storms can sustain visible activity for longer periods, sometimes streaming into the early hours. If a recent solar storm is underway, watching forecasts from space weather services can give a sense of potential duration for your location.