Yale Environment 360: While drought conditions in California and the southwestern U.S. have been dominating news headlines, Oregon and Washington could also soon be facing dangerously dry conditions due to low snowpack levels, as these photos show. Although the region has seen several months with average or just-below average precipitation, unusually warm temperatures on land and offshore led to most of that moisture arriving in the form of rain rather than snow. Like many parts of the western U.S. and Canada, the Pacific...