El Niño is a weather phenomenon that occurs when the Pacific Ocean's surface temperatures become unusually warm.
This year's El Niño is expected to be one of the strongest on record, with the potential to impact weather patterns and climate around the world.
In the United States, the strong El Niño is expected to bring wetter-than-average conditions to the southern states and drier-than-average conditions to the Pacific Northwest.
Other potential impacts of the El Niño include increased hurricane activity in the Pacific and decreased hurricane activity in the Atlantic.
The El Niño could also lead to warmer temperatures in the northern United States and cooler temperatures in the southern United States.
While the El Niño is expected to last through the winter, its impacts may continue to be felt into the spring and summer months.
Scientists and meteorologists will continue to monitor the El Niño and update their forecasts and predictions as necessary.