How can high geomagnetic activity benefit radio communications?

High geomagnetic activity, such as a geomagnetic storm, is generally detrimental to High Frequency (HF) communications due to increased absorption of signals, particularly in polar regions. However, this same activity can be highly beneficial for Very High Frequency (VHF) communications. During intense geomagnetic events, charged particles interact with the upper atmosphere to create auroras (the Northern or Southern Lights). These highly ionized auroral curtains can reflect or scatter VHF radio waves, allowing operators to make long-distance contacts via 'auroral scatter' that would not normally be possible. Distractors claiming HF signals are improved are incorrect, as polar HF paths are actually severely degraded during these events.