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.

Heavy snow may be falling in one location, while the sun may be shining just a mile or two away in either direction. The physical geography of the land and water is also important. National Weather Service meteorologists consider these factors as …

This product is issued by the National Weather Service when pure lake effect snow (this is where the snow is a direct result of lake effect snow and not because of a low pressure system) may pose a hazard or it is life threatening. The criteria for this advisory varies from area to area.

Nov 28, 2024 · "A multi-day lake effect snow event off Lake Erie will begin tonight and bring periodic heavy snow to the region," the National Weather Service Cleveland office said in a statement. "Visibilities...

Jan 14, 2025 · Portions of New York and Pennsylvania are under a lake-effect snow warning on Tuesday as "heavy" accumulations up to a foot may be possible in certain areas, the National Weather Service...

Jan 24, 2025 · The National Weather Service (NWS) has issued a "Lake Effect Snow Warning" for Oswego County in northern New York, along the banks of Lake Ontario. Up to 10 inches of heavy snow has been forecast ...

Dec 5, 2024 · This map from the National Weather Service shows areas expecting heavy lake effect snow marked in dark green near Lake Erie in Ohio, Pennsylvania and New York state.

Jan 25, 2025 · Here's a look at where lake effect snow piled up in Michigan. How much snow fell for the week? The National Weather Service Grand Rapids office reported totals encompassing Jan. 19-24, including:

Dec 2, 2024 · This study takes a closer look at how rapid changes in Great Lakes temperatures and ice impact regional atmospheric conditions and lake-effect snow. Rapidly changing Great Lake surface conditions during lake effect snow events are not accounted for in existing operational weather forecast models.

On Feb. 13, 2020, the NOAA-20 satellite viewed cloud streets over Lake Superior, signifying a cold air mass on the move. In fact, wind chill advisories were in effect on Thursday for a portions of the Great Lakes region and Northern New England, according to the National Weather Service.