Lake-Effect Snow
In late fall, cold air originating in Canada and then moving over the Great Lakes often produces lake-effect snow in New York State. When the cold air mass moves across large areas of warmer lake water, water vapor enters the cold air. When this moist air moves over the cooler land, the moisture comes out of the atmosphere as snow. The effect is enhanced when the air that flows off the lake is forced over higher land elevations. The areas affected by lake-effect snow can receive many inches of snow per hour. As the lakes gradually freeze, the ability to produce lake-effect snow decreases.
What is the most likely two-letter air mass symbol for an air mass from Canada that produces lake-effect snow in New York State?