Both El Niño and La Niña are important climate newsmakers.  The winter of 1997-98 saw what has been called the "El Niño of the century".  The winter of 1998-99 saw a strong La Niña in the eastern Pacific.

This web site explores the climatology of both the El Nino and the La Niña phenomenon.  The impact of El Niño and La Niña on North America as well as here in Lincoln, Nebraska are also examined.
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La Niña Winters in Lincoln

North American Impact

El Niño/La Niña and Climate Variability

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External Links:

Current status of  La Niña

Cuarent status of El  Niño