A winter storm is a storm in which the dominant varieties of precipitation are forms that only occur at cold temperatures, such as snow or sleet, or a rainstorm where ground temperatures are cold enough to allow ice to form. These storms are not restricted to the winter season, but may occur in the late autumn and early spring. The most powerful winter storms usually occur in March and, in regions where temperatures are cold enough, April.
(From Wikipedia, the free encyclopedia.)
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