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On December 13th, I created these maps to depict the Lake Effect Snow Watches and Warnings in New York. These alerts were issued by the National Weather Service (weather.gov) that day and were expected to expire on Friday, December 16th. However, more counties in New York now have alerts compared to the ones shown above. Jefferson, Lewis, and Oswego counties in northern New York and Cattaraugas, Chautauqua, Erie, and Genesee counties in western New York had Lake Effect Snow Warnings. As of midnight on December 15th, Genesee no longer has a warning but now has a Winter Weather Advisory. Monroe, Orleans, and Wyoming counties in western New York had Lake Effect Snow Watches, which are considered less severe than the warnings. Wyoming County now has a Lake Effect Snow Warning; Monroe and Orleans counties now have a Winter Weather Advisory.
Partial or complete areas of ten counties in western New York — Allegany, Cayuga, Erie, Genesee, Livingston, Monroe, Niagara, Ontario, Orleans, and Wayne — currently have Winter Weather Advisories. More details and what to expect about New York's various advisories, watches, and warnings are provided on weather.gov. In other weather news, (1) several Northwestern US states have Winter Storm Warnings, and (2) people living on the Keweenaw Peninsula of Upper Michigan — specifically the northern section of Houghton County and all of Keweenaw County, including Isle Royale — are dealing with a Blizzard Warning. Hazards include wind-blown snow (low visibilities), low wind chill temperatures, and treacherous road conditions. This Blizzard Warning was not issued until recently — right before midnight Eastern Time, to be exact.
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