Jim Woodmencey is the long-standing meteorological sage of Jackson Hole. Since the 1990s his website, Mountain Weather, has carried tailor-made forecasts for both the valley and the Tetons â and, he hopes, has kept many a recreationist safe and warm. There was a time, though, when he didnât know a cirrus cloud from a cumulonimbus. What happens when a mass of air rides a sloping mountainside up to 13,000 feet? Teenage Woodmencey hadnât a clue. But after enough weather-induced misadventures, he chose to learn such things and, eventually, to package his knowledge into a service fo...