A weak La Niña is expected to bring colder and wetter conditions to northern parts of the United States this winter, while the South may be warmer and drier than normal. El Niño and La Niña are ...

And while El Niño ... average snow when a La Niña pattern is in place, Di Liberto said. The areas that get more average snowfall in an La Niña winter are shaded in blue on the map below ...

Modeling experiments show Pacific warm and cold patches persisted even when continents were in different places The El Niño event, a huge blob of warm ocean water in the tropical Pacific Ocean that ...