The National Weather Service (NWS) uses several alert systems for hazardous winter weather, including Winter Storm Warnings, Winter Weather Advisories, Blizzard Warnings, and Lake-Effect Snow Warnings. These alerts are issued when heavy snow, ice, strong winds, or dangerous combinations of these conditions are expected.
According to recent news reports, several states in the Midwest, including areas around the Great Lakes, as well as parts of the northern and central regions of the U.S., are currently experiencing alerts such as winter storm warnings and lake-effect snow warnings.
A more recent report states that 13 U.S. states are facing winter storm alerts, with forecasts of heavy snowfall, strong winds, icy conditions, and in some places up to 15 inches of snow. Source: Newsweek