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- Dictionarylake ef·fect snow
noun
- 1. snow falling on the lee side of a lake, generated by cold dry air passing over warmer water, especially in the Great Lakes region.
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Lake-effect snow is produced during cooler atmospheric conditions when a cold air mass moves across long expanses of warmer lake water. The lower layer of air, heated by the lake water, picks up water vapor from the lake and rises through colder air. The vapor then freezes and is deposited on the leeward (downwind) shores.
Lake Effect snow occurs when cold air, often originating from Canada, moves across the open waters of the Great Lakes. As the cold air passes over the unfrozen and relatively warm waters of the Great Lakes, warmth and moisture are transferred into the lowest portion of the atmosphere.
Sep 11, 2024 · The Short Answer: Lake effect snow forms when cold, below-freezing air passes over a lake’s warmer waters. This causes some lake water to evaporate and warm the air. Then, the moist air moves away from the lake. After cooling, the air dumps its moisture on the ground, potentially becoming snow.
Nov 17, 2022 · Lake-effect snow forms when dry, freezing air picks up moisture and heat as it moves along warmer lake water. This causes some of the lake water to evaporate into...
Nov 11, 2016 · Lake-effect snow is a weather phenomenon created when cold, dry air picks up moisture and heat by passing over a relatively warmer lake, such as one of the Great Lakes or the Great Salt...
Nov 27, 2023 · Lake effect snow forms when cold air moves over warm water, according to the National Weather Service. Most common in late fall and into winter, the heat and moisture coming from...
The Lake Effect phenomenon is well-known and studied in meteorological circles. Northern or westerly winds blow over the lakes’ surface, picking up heat and water vapor that produce warm columns of air known as “thermals.”
