A cold northwesterly to westerly wind over all the Great Lakes created the lake-effect snowfall of January 10, 2022. Lake-effect snow is produced during cooler atmospheric conditions when a cold air mass moves across long expanses of warmer lake water.

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.

What is Lake Effect Snow? Lake Effect Snow (LES) is very common across the Great Lakes region during the late fall and winter. LES occurs when cold air, often originating from Canada, moves across the open waters of the Great Lakes.

Lake-effect snow is a fascinating meteorological phenomenon that occurs in certain regions near large bodies of water, particularly the Great Lakes in North America. Here's how it works.

2024年12月2日 · When towns along the Great Lakes get buried in drifts of blowing snow, like several have over the past few days, weather experts start talking about the “lake effect.” Lake-effect snow often occurs in relatively narrow bands that dump copious amounts of snow.

2024年12月2日 · Lake-effect snow is formed when cold air passes over relatively warmer lakes and happens as a series of narrow, but intense periods of snow — known as snow bands — that stream off of the...

2025年1月23日 · Lake effect snow is generated when cold air moves over warm lake waters such that narrow bands of snow clouds develop. The warmer lake waters heat the lower portions of air, causing it to become less dense and begin to rise.

2024年12月5日 · 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.

Lake Effect Snow 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.”

2024年11月29日 · There's a classic pattern meteorologists look for ahead of heavy lake-effect snow. The pattern features a sharp, persistent southward plunge of the jet stream anchored over the eastern U.S. by a...