3: Monsoon Season

New Mexico’s summer monsoon is upon us. The rainy season began the last week of June, bringing moist air north from the Gulf of California – pumping up flows in drying rivers, wetting forested landscapes and in the process reducing the threat of catastrophic wildfires, and perhaps most importantly bringing the visceral joy that of rain. Streaming up through the mountains of central Mexico, the moisture from what scientists call the “North American Monsoon” brings 50 percent or more of the annual precipitation to many areas of the southwest, from Tucson and Phoenix up through Albuquerque. New Mexico’s Middle Rio Grande responds, with monsoon rains temporarily lifting up flows in an otherwise drying river. Winter snows falling on the mountain watersheds upstream of us provide the bulk of the water supply for people and ecosystems, concentrated into river valleys as they flow downstream. But monsoon rains add a critical piece of the weather and climate puzzle as communities of the West work to adapt to climate change.