What Is La Nina?

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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 Aurora from Mud Lake Aurora from Mud Lake
Mild aurora last night that picked up between 2:30 and dawn. From Mud Lake, near Republic, Washington Wednesday morning.
YouNews Morning Doves Morning Doves
We have a small covey of Morning Doves that has grown from 2 adults to somewhere between 10 and 12 over the past 7 years. They visit the feeder in the mornings and evenings.
YouNews Morning Doves Morning Doves
We have a small covey of Morning Doves that has grown from 2 adults to somewhere between 10 and 12 over the past 7 years. They visit the feeder in the mornings and evenings.