La Niña typically cools the Pacific. But this time, large swathes of warmer-than-average sea temperatures have muted the cooling.
The surface waters of the Pacific Ocean have been considerably warmer than average lately — with one exception: a small spear of coolness along the equator that’s characteristic of La Niña.
Apparently, all that warmth has prevented the current La Niña — a cool phase in the Pacific that influences weather worldwide — from gaining much strength. In fact, as La N