"Snowfall" was a treat for crime drama fans. Created by John Singleton, it ran for six acclaimed seasons. A spin-off is in development, and we have the details.

Snowfall is not based on a true story but is indeed backed by research on real events that have shaped the narrative, especially the early 1980s crack epidemic in Los Angeles.

Winter weather advisories remain in effect until 4 p.m. in Bergen, Morris, Passaic, Sussex and Warren counties, because roads may become icy.

Northern U.S. states and higher elevations have the best chances of a white Christmas, while southern and western areas are far less likely to see snow this year.