The eastern Pacific remained cold in July, while the central Pacific finally began to trend steadily cooler over the course of the month. WeatherTiger’s ENSO Whisperer August output is a little faster to cross the threshold of formal La Nina, showing a 75% chance of -ENSO conditions by September.
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The 2019 El Niño is officially gone as NOAA has declared the end of a weak ENSO-positive event as of last week. The Pacific is currently split between lingering warmth west and an almost Niña-like coolness in the east, and atmospheric conditions are generally reflecting a neutral ENSO state. We remain confident that ENSO will stay neutral conditions through fall.