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Use the pull down menu below to go to any of the El Niño/La Niña Watch pages.
Westerly Wind Triggers an Oceanic "Kelvin" Wave
March 25, 1997
In March, westerly wind bursts (i.e., east-blowing winds)
north of Australia triggered an oceanic "Kelvin" wave that
travelled eastward towards the Americas. This allowed warm
water to move away from its usual location in the western
Pacific Ocean.
Red and white colors show sea-level that is above the
average height. This area corresponds to water from the
"warm pool" that originated in the seas northeast of
Australia.
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