What is most likely to result in auroral propagation?

Auroral propagation relies on the intense ionization found in the auroral zones near the Earth's magnetic poles. This ionization is created when charged particles from the Sun interact with the Earth's magnetosphere. Severe geomagnetic storms, usually triggered by coronal mass ejections or significant solar flares, cause a massive influx of these charged particles. This creates a highly energized, reflective curtain of ionization capable of bouncing VHF and UHF signals. Meteor showers create brief trails of ionization rather than widespread auroral curtains, while polar low-pressure areas are tropospheric weather events that have no effect on geomagnetic space weather.