Britain's Met Office has predicted sea surface temperatures in the tropical Pacific will reach an "unheard-of" level of potentially more than three degrees above average, triggering severe droughts across South America and the West Pacific. Such an event would have serious knock-on effects for global food security.
This year's El Nino weather pattern will be the biggest in over a century, warming sea surface temperatures to an "unheard-of" level, Britain's national weather agency predicted Friday.
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