§   Cloud base at 6000 m or higher

§   A very thin layer of cloud composed of small ice crystals

§   Usually light white in colour and translucent to sunlight

§   Looks as if the sky is wearing a semitransparent veil

§   The outline of the sun and moon can be clearly seen through it

§   Can cause white or coloured rings around the sun or moon (a phenomenon called halo)

§   Cloud base at 6000 m or higher

§   Mainly composed of ice crystals and usually light white in colour

§   Thin and translucent to sunlight

§   Scaly or looks like thousands of pearls filling the sky

§   Short life span and deforms easily under strong winds aloft

cirrus image

 §   Cloud base at 6000 m or higher

§   Mainly composed of ice crystals and usually white in colour

§   Thin and translucent to sunlight

§   Silky, often feathery or fibrous, wispy and scattered

§   Produces a red or orange hue as sunlight is scattered during sunset

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