After three years of drought here in California, we may get a deluge next winter thanks to El Nino. Federal forecasters predict a warming of the central Pacific Ocean this year that will change weather worldwide. The warming, called an El Nino, is expected to lead to fewer Atlantic hurricanes and more rain next winter for drought-stricken California and southern states, and even a milder winter for the nation's frigid north.
Globally, it could mean an even hotter year coming up and billions of dollars in losses for food crops.
The National Oceanic Atmospheric and Administration issued an official El Nino watch Thursday, March 6th. An El Nino is a warming of the central Pacific once every few years, from a combination of wind and waves in the tropics. It shakes up climate around the world, changing rain and temperature patterns.
Mike Halpert, acting director of NOAA's Climate Prediction Center, says the El Nino warming should develop by this summer. Although early signs are appearing already a few hundred feet below the ocean surface, meteorologists say an El Nino started to brew in 2012 and then shut down suddenly and unexpectedly.
The flip side of El Nino is called a La Nina, which has a general cooling effect. It has been much more frequent than El Ninos lately, with five La Ninas and two small-to-moderate El Ninos in the past nine years. The last big El Nino was 1997-1998.. El Ninos are usually strongest from December to April.
Scientific studies have tied El Ninos to farming and fishing problems and to upticks in insect-born disease, like malaria.
After years of dryness and low reservoirs, an El Nino's wet weather would be welcome in the drought stricken Western U.S.