Here are five maps that illustrate what is going on. 1. What Is El Niño? El Niño is a term used to describe warming weather patterns in the Pacific. However, its effect is so large that it can ...

Summer may end on a cooler note for parts of the U.S., with meteorologists suggesting that a weakened polar vortex could ...

The National Hurricane Center (NHC) has started issuing its daily tropical weather outlooks to provide crucial information on potential tropical activity, but what does all of that information mean?