What Is La Nina?

Tools

By By Steve Pool

SEATTLE - You probably heard of our "El Nino" winter, but have you heard about its opposite "La Nina"?

El Nino and La Nina are large-scale global weather patterns that result from changes in ocean temperatures in the equatorial Pacific Ocean region.

El Nino is caused when the temperatures are warmer than normal. La Nina is when they're cooler than normal.

Some scientists believe we're coming out of our El Nino event and heading for a La Nina event this upcoming winter. In the Pacific Northwest, La Ninas tend to mean cooler and wetter than normal winters, but it's not a guarantee. Still, Seattle has averaged 20 inches of snow in La Nina years, compared to 10 inches in normal years.

For More Information:

KOMO Weather FAQ

www.pmel.noaa.gov

www.cpc.ncep.noaa.gov

Your Photos

YouNews Hurricane odile Hurricane odile
Hi, I'm a resident of issaquah wa, here with my husband in cabo San Lucas. We are 34 and 38 years old came down to vacation for the first time since the birth of our first child (3 years old). We landed in cabo on Tuesday the 16th of September.
YouNews Waiting their turn Waiting their turn
A Washington State Ferry waits its turn to dock at the Lopez Island Ferry Terminal as the sun rises over Mount Baker in the background.