The Nation Report: What is radiational cooling? The Nation Posted: Nov 18, 2019 / 10:37 PM UTC / Updated: Nov 18, 2019 / 10:37 PM UTC GRAND JUNCTION, Colo. — Chief Meteorologist Kris Nation explains radiational cooling on Monday’s Nation Report, which is key to the Grand Valley’s winter season. Latest Local News Videos KREX5 Morning Weather Forecast 12/16/19 Video Western Slope's Wildest Weekend Plays Video Red Cross Holiday Safety Tips Video 12/15/19 Weather Forecast with Star Harvey Video Business Opportunities in Hemp Video Child Murdered in Grand Junction Video