U.S. meteorologists say an El Nino has formed. That's the natural warming of parts of the Pacific that changes weather around the globe.

Warnings of a strong El Nino weather pattern this year suggest that the coming months could be characterized by drought, flooding and extreme heat. What impacts are in store? And…

Scientists anticipate El Nino's arrival soon, with a 90% certainty, potentially becoming a strong event. This natural climate pattern, marked by warmer Pacific waters, could…