VIIRS DNB RGB Shows Fog in the Yukon-Kuskokwim Delta Region

This VIIRS Daynight Band RGB image is made by incorporating the longwave IR (i05 – 11.5um) and shows the fog in the Yukon-Kuskokwim Delta region early yesterday morning. Lower clouds are typically shown in yellow and higher clouds in blue, but surface temperatures are as cold as the cloud tops in some places, making it more difficult to differentiate. Therefore, those areas appear blue as well. Notice the dots from village lights along the river, picked up from the Daynight band.