Typical El Niño effects are likely to develop over North America during the upcoming winter season, including warmer-than-average temperatures over western and central Canada, and over the western and northern United States, wetter-than-average conditions over portions of the U.S. Gulf Coast and Florida, and drier-than-average conditions in the Ohio Valley and the Pacific Northwest.
Chris Farley, an El Niño expert, describes the phenomenon.
[youtube=http://www.youtube.com/watch?v=ibo40FQjG40]
For a more serious look at El Niño check out:
http://www.elnino.noaa.gov/
http://www.pmel.noaa.gov/tao/elnino/nino-home.html