DANGEROUS ARCTIC BLAST.

LINSEY DAVIS (ABC NEWS) (Off-camera) Good evening, everyone. Thanks so much for joining us on this busy Sunday. I'm Linsey Davis. We begin tonight with a massive arctic blast expected to tighten its grip across the country, impacting millions just ahead of the holidays. It comes right on the heels of a powerful winter storm that brought snow from California to Maine. Parts of the Northeast are still feeling the impact. More than a foot of lake effect snow fell today in Upstate New York. [ABSTRACT FROM PUBLISHER]