La Niña could soon arrive. Here's what that means for winter weather

The National Oceanic and Atmospheric Administration’s Climate Prediction Center says there is a 60% chance that a weak La Nina event will develop this autumn and could last until March.La Nina is part of a natural climate cycle that can cause extreme weather across the planet — and its effects vary from place to place.Although there is no guarantee how this La Nina will play out, there are some general trends. Experts say northern parts of South America could see more rain than usual