Sustained negative values (bottom/yellow) of the SOI below −7 may indicate El Niño, while sustained positive values above +7 may indicate La Niña. La Niña and El Niño events since 1900 are indicated on the graph.
Detailed event summaries: Past La Niña events, Past El Niño events
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This page was created at 23:39 on Monday 15 October 2018 (UTC)
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