The Arctic blast engulfing the eastern half of the Lower 48 will make mid-November feel like mid-January. Between Sunday and Wednesday, temperatures will sink to levels 15 to 30 degrees colder than normal from the Plains to the East Coast. The National Weather Service is predicting that about 250 cold records will be established as a result of this polar plunge, from the Gulf Coast to the Great Lakes. Next week’s cold is the second and stronger of back-to-back Arctic fronts sweeping across the nation. The first front raced from the Midwest to the East Coast between Wednesday and Friday this week.