• La Niña arrives, Central Florida notices already

    By: Irene Sans


    Thursday morning, NOAA's Climate Prediction Center released a statement declaring that La Niña pattern has indeed arrived.


    These types of climate patterns' start are not easily established or known exactly when they are going to make an appearance. It is only after certain conditions have been met:

    1. Eastern tropical Pacific water temperatures must be cool, below average.
    2. Rainfall has decreased over the central tropical Pacific Ocean.
    3. Indonesia's rainfall has increased.
    4. The easterly equatorial winds have become stronger.



    This will be the second consecutive winter in which a La Niña will be present. There is a 50 percent chance that La Niña will stay until April 2018.


    Sea surface temperature anomaly in the Pacific Ocean during a strong La Niña (top, December 1988) and El Niño (bottom, December 1997).


    Fluctuations between a La Niña, neutral conditions and El Niño occur, not necessarily in this order.

    The last La Niña started in July 2016 and extended to January 2017, and was followed neutral conditions during the spring and summer. That all changed Thursday, when La Niña officially made its return.


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