Climate Central: On the thirsty rangelands of Arizona and New Mexico, which have been mired in an on-again, off-again drought since 1999, ranchers and water managers are hoping for an unusually wet summer monsoon season that will help make up for this winter's lackluster snowpack. Reservoirs have been depleted to near-record lows, and the major rivers and tributaries are running at barely a trickle, making the summer rainfall season crucial to avert potentially severe water shortages, at least temporarily.
However,...