Facts About Snowfall 

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Formation of Snowflakes

Snowflakes form when water vapour in the air freezes into ice crystals. Each snowflake has a unique hexagonal pattern, and their shapes depend on temperature and humidity.

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Size and Composition

Snowflakes can vary in size, ranging from tiny particles to large, intricate structures. Warmer temperatures typically lead to larger snowflakes.

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Snowfall Measurement

Meteorologists use various instruments to measure snowfall. The unit commonly used is inches or centimetres, representing the depth of snow on a flat, open surface.

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Lake Effect Snow

In certain regions, such as the Great Lakes area, lake-effect snow occurs when cold air passes over warmer lake waters, picking up moisture and depositing it as snow on the downwind shores.

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Types of Snowfall

Snowfall can be classified into different types, including light snow, heavy snow, flurries, and blizzards. Blizzards, characterized by strong winds and low visibility, are particularly intense snowfall events.

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Snow Water Equivalent

The water content of snow is crucial for understanding its impact on water supply. Snow water equivalent is the depth of water that would result if the entire snowpack melted.

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Snowstorms

Intense snowfall events are often referred to as snowstorms. These can disrupt transportation, close schools, and create winter weather advisories.

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Snowpack

Snow that accumulates on the ground forms a snowpack. The snowpack's thickness and density can influence various aspects, including avalanche risk and spring runoff.

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Global Snow Cover

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