An early blast of Arctic air is sweeping across the eastern U.S. this week, bringing frigid temperatures and the season’s first significant snow to parts of New York.

A Weather Impact Alert is in effect Sunday - Lake effect snow for Chautauqua and Cattaraugus County expected Sunday into Monday afternoon

The lake band strengthens overnight and focus on Buffalo. At onset there could be rain mixing in near the lake shore to limit accumulations.

The AccuWeather forecast is very similar with 41 degrees at kickoff time with intermittent clouds. Even though the weather service is calling on a chance of precipitation, AccuWeather predicts rain and snow flurries stopping around 11 a.m. and starting back up around 4 p.m.

Millions of Americans from the Midwest to the Northeast to the South are facing the first deep freeze and snow of the season.

Buffalo and other communities are pushing back the start of their overnight parking bans due to fair weather for the beginning of the winter weather season