Lake Effect Snow Warning
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See Severe weather terminology for a comprehensive article on related weather terms.
Lake Effect Snow Warning is a bulletin issued by the National Weather Service in the United States to warn of heavy snowfall amounts that are imminent from convective snow generated by very cold airmass passing over unfrozen lakes. The criteria for amounts may vary signficantly over different county warning areas.
Environment Canada's Meteorological Service of Canada issues similar warnings but they are called Snowsquall warnings.
