Climate Central: For West Coasters sick of the ridiculously resilient ridge of high pressure and East Coasters tired of hearing about the polar vortex, get ready for a new climate phenomenon to dominate headlines. El Nio could be making a return this fall after a 4-year hiatus, changing rainfall and temperature patterns across the world. It could even boost the odds of 2014 being the globe's hottest year on record.
The National Oceanic and Atmospheric Administration issued an El Nio Watch on Thursday, indicating...