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UN's meteorological agency predicts rising El Nino event could be among strongest since 1950

  • Maxx Dilley, Director Climate Prediction and Adaptation Branch of WMO (World Meteorological Organization), informs   the media about   WMO's El Nino Update during a press conference, at the European headquarters of the United Nations in Geneva, Switzerland, Tuesday, Sept. 1, 2015. ( (Salvatore Di Nolfi/Keystone via AP)

    Maxx Dilley, Director Climate Prediction and Adaptation Branch of WMO (World Meteorological Organization), informs the media about WMO's El Nino Update during a press conference, at the European headquarters of the United Nations in Geneva, Switzerland, Tuesday, Sept. 1, 2015. ( (Salvatore Di Nolfi/Keystone via AP)  (The Associated Press)

  • David Carlson, Director World Climate Research Program of WMO, informs the media about  WMO's El Nino Update during a press conference, at the European headquarters of the United Nations in Geneva, Switzerland, Tuesday, Sept. 1, 2015.  (Salvatore Di Nolfi/Keystone via AP)

    David Carlson, Director World Climate Research Program of WMO, informs the media about WMO's El Nino Update during a press conference, at the European headquarters of the United Nations in Geneva, Switzerland, Tuesday, Sept. 1, 2015. (Salvatore Di Nolfi/Keystone via AP)  (The Associated Press)

  • Rupa Kumar Kolli, Chief World Climate Applications and Services Division WMO, informs  the media about WMO's El Nino Update during a press conference, at the European headquarters of the United Nations in Geneva, Switzerland, Tuesday, Sept. 1, 2015. (Salvatore Di Nolfi/Keystone via AP)

    Rupa Kumar Kolli, Chief World Climate Applications and Services Division WMO, informs the media about WMO's El Nino Update during a press conference, at the European headquarters of the United Nations in Geneva, Switzerland, Tuesday, Sept. 1, 2015. (Salvatore Di Nolfi/Keystone via AP)  (The Associated Press)

Experts at the World Meteorological Organization say the El Nino event may be on track for one of the strongest in more than a half-century.

The Geneva-based U.N. body says ocean and atmosphere conditions over the tropical Pacific, and most expert models and opinion point to a strengthening El Nino event in the second half of 2015.

WMO director of climate prediction Maxx Dilley says "we have a well-established El Nino event under way," and farmers, rescue officials and reservoir operators would be among officials bracing for its rise.

A WMO statement Tuesday said models indicate ocean temperatures in the east-central tropical Pacific are likely to reach peaks that could make this El Nino among the four strongest since 1950. Peak strength is expected between October and January.