As new Arctic air enters the United States, NWS meteorologists warn about the “most intense” snow storm of the season.

More snow is on the way for parts of Pennsylvania. A storm that will bring snow from the Midwest to the central Appalachians is predicted to take place from Wednesday evening into Thursday night, according to Accuweather.

Snow will turn into sleet and freezing rain along parts of the Southeast, as well as southern Arkansas, the weather service reported. Forecasters warn that icy conditions, between a tenth and a quarter inch of ice, will make travel dangerous for many. Power outages and downed branches are also a concern.

On Sunday, there’s a chance of snow, but current forecasts indicate it could be light, the weather service said. “Even if it develops, the system will be rather weak and progressive, so snowfall totals and resulting impacts appear minor,” the weather service said in its Thursday morning forecast discussion.

Twenty states, from Texas to Delaware, were on alert Friday for snow and ice as the storm continued to move across the South.

Snowfall totals on Thursday are expected to be light. The weekend forecast for a more serious winter storm remains uncertain.

NWS reports confidence that a winter storm will bring precipitation to SC Lowcountry next week, but not yet saying snow. The Weather Channel says there will be.

Separate rounds of winter storms could impact the Northeast as cold air tightens its grip, forecasters say. Key Highlights: Bitter cold temperatures, 10 to 20 degrees below average, are expected starting Tuesday,