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As we all know.. Contrails form when hot, moist exhaust from aircraft engines meets the extremely cold, low-pressure air at cruising altitudes (typically 30,000ft+). The water vapour condenses and freezes into ice crystals almost instantly.. that’s the white line you see.Why Some Contrails Persist (and Some Don’t):1. Humidity at AltitudeIf the upper atmosphere is humid enough, those ice crystals don’t evaporate quickly.. they hang around, spreading out into cirrus-like clouds. If it’s dry, they vanish quickly, that’s why some contrails persist and others don’t, even from the same aircraft type.2. Temperature and Pressure ConditionsAt cruising altitudes, temperatures often drop below -40°C. When the air is both cold and humid, it becomes the perfect environment for persistent contrails to not only stay but sometimes expand.3. Wind and Atmospheric LayersHigh altitude winds can spread contrails laterally, turning thin lines into wide streaks or sheets. That’s why they sometimes look like fake “cloud cover”.In the Northwest UK (like over Blackpool):• The area sits beneath busy transatlantic and domestic flight paths, especially around airway intersections.• The upper atmosphere often has the right conditions for persistent contrails, especially in spring and autumn when tropopause dynamics are active.• What you’re seeing is completely normal.. mapped, scheduled traffic creating natural ice crystal trails in a suitable environment.#conspiracyclowncollege #chemtraildebunker #chemtrailmyths #chemtrailclowns #chemtrailsdebunked #AviationFacts #contrailsnotchemtrails #sciencewins #conspiracytheories