One morning last week, a thick fog enveloped the whole landscape. Today the morning mists stayed low, hanging softly over ponds and wet fields. As cold air moves in over warmer bodies of water or moist ground, water condenses and forms low ribbons of mist. Normally we wouldn't see much of this until the cooler weather of fall sets in, but we've had a fresh burst of cool air following Tuesday night's storms. The photo below was taken this morning looking north at the pond and wetland that lie between Prairie Street and Michigan Drive in Northfield.