weather January 4, 2023 10:32 pm What Is an Atmospheric River? Rick Explains NBC 5 Chief Meteorologist Rick Mitchell discusses the weather phenomenon unfolding on the West Coast known as an “atmospheric river.” Wake Up to Something Good 0:30 Weather Quiz: Arctic cold front 0:48 Weather Quz: Weak polar vortex 0:30 Weather Trivia: Wind power 0:37 Weather Quiz: Hottest temperature in December 1:03 Weather Quiz: Rollercoasters and weather