We have special #GOES satellite products (nighttime microphysics) that allow us see fog when there are little to no clouds. You can see the river & valley fog (locally dense) in this animation in the lighter blue across the interior. Use caution if driving in these spots this AM. pic.twitter.com/KUQnzlpCWR

— NWS New York NY (@NWSNewYorkNY) October 4, 2023