Nathaniel Johnson, a forecaster with NOAA's Climate Prediction Center, warned that the transition to El Niño conditions this year could rank among the fastest ever recorded. Johnson described the shift as "one of the most rapid transitions that I've seen" based on ocean temperature patterns and atmospheric data his team monitors.
El Niño occurs when warm water in the equatorial Pacific Ocean spreads eastward, disrupting global weather patterns and typically raising global temperatures. The phenomenon develops gradually over months, but Johnson's assessment suggests this year's onset is accelerating faster than most historical cases.
A rapid transition matters because it gives weather services, agricultural sectors, and coastal communities less time to prepare for associated impacts. El Niño typically brings wetter conditions to parts of North and South America, drier weather across the Pacific, and shifts in hurricane activity across ocean basins. Rapid development can catch forecasters and planners off guard.
NOAA's Climate Prediction Center uses sea surface temperature observations from buoys, satellites, and ocean models to track El Niño development. Johnson's team issues monthly outlooks predicting the likelihood of El Niño, neutral, or La Niña conditions forming over the next three to six months. A speed record would appear in those forecasts as unusually steep warming rates compared to baseline historical data.
The observation carries weight given Johnson's role at one of the world's primary institutions for climate monitoring. However, Johnson's comment represents a single forecaster's assessment rather than an official NOAA determination. The agency typically issues formal declarations about El Niño onset after conditions have solidified, not during the transition phase.
If confirmed as record-breaking, a rapid 2023-2024 El Niño could influence global temperature records, since El Niño years consistently rank among the warmest on record globally. Scientists track how quickly the Pacific warms as one