Ahead of a warm front, high altitude cirrus clouds form naturally as moisture increases.
Roger
on November 18, 2025 215 views
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Roger
Ahead of a warm front, high altitude cirrus clouds form naturally as moisture increases. In those same conditions, contrails can linger because the air is cold, humid, and perfect for ice crystals to form and persist. Contrails contain nothing beyond normal engine exhaust and water vapour no added... View More
November 18, 2025