Complex sentence: Unofficial reports indicated a few snowflakes fell along the Nature Coast once or twice, due to advancing Arctic air quickly descending from the northwest over relatively warm Gulf waters (whether or not it was virga is debatable).
Split into simpler sentences: Unofficial reports indicated a few snowflakes fell along The Nature Coast once or twice. Due to advancing Arctic air quickly descending from the northwest over relatively warm Gulf waters (whether or not it was virga is debatable).