Freezing rain is a form of precipitation that involves rainfall with temperatures below freezing. The rain is supercooled when passing though a sub-freezing layer of air, several hundred metres above the Earth. The rain then freezes upon impact. The resulting ice is called glaze. If a storm produces a large amount of glaze ice, it is referred to as an ice storm.
Glaze ice can cause many hazards, as it causes roads to be unsafe, and it changes the shape of aircraft, making flight more difficult. Plants also suffer greatly under freezing rain.
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