RainĮach raindrop is made up of a million or so microscopic cloud droplets. Finally, if the ice crystal melts, only to reenter freezing air just at ground level, it will strike the ground as freezing rain. However, if the melting raindrop passes through a freezing layer, it will refreeze and reach the ground as ice pellets, or frozen raindrops. If the ice crystal passes through a layer of air above the freezing point of water, the ice crystal will melt and fall as rain. If the air temperature remains below freezing throughout the entire descent, the precipitation will reach the ground in the frozen state as snow. What happens next depends on the air temperature at various heights throughout the ice crystal's descent. In the process, the ice crystal takes on the shape of a snowflake, a lump of snow or ice, or in severe thunderstorms, hail. As an ice crystal descends through a cloud, it grows by collecting water vapor and droplets of supercooled water, which remains in the liquid state below the freezing point. Most precipitation (except in the tropics) originates in clouds as ice crystals. Each of the three main forms of precipitation can be broken down into specific categories, according to the temperature of the air layers through which the precipitation passes, the size of the individual water particles, and the intensity with which it falls. By this definition, precipitation includes rain, snow, and ice. Precipitation is defined as any form of water that originates in the clouds and falls toward the ground. Precipitation Rain Drizzle Virga Showers Freezing rain Snow Snowflakes Snow grains and snow pellets Intensity of snowfall Blizzards Avalanches Ice Ice pellets Hailstones For More Information
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