2025 El Nino

2025 El Nino. La Nina El Nino 2025 Juan A. Meadow Nino Index (ONI) [3 month running mean of ERSST.v5 SST anomalies in the Nino 3.4 region (5N-5S, 120-170W)] Big El Ninos generally lead to big heat discharge and a longer period for the heat to build back up in the tropics, leading to multi-year La Ninas

As of mid-February 2025, weak La Niña conditions persist in the equatorial Pacific, marked by cooler-than-average sea surface temperatures in the Niño 3.4 region, which remain slightly below. It shows a warm area spreading in the eastern tropical Pacific, with the cold anomalies disappearing

What you should know about El Niño and La Niña Grist

El Niño and La Niña Years and Intensities Based on Oceanic Ni ño Index (ONI) Jan Null, CCM Updated thru December 2024 - February 2025 : The Oceanic Ni ñ o Index (ONI) has become the de-facto standard that NOAA uses for classifying El Ni ñ o (warm) and La Ni ña (cool) events in the eastern tropical Pacific As of mid-February 2025, weak La Niña conditions persist in the equatorial Pacific, marked by cooler-than-average sea surface temperatures in the Niño 3.4 region, which remain slightly below. Big El Ninos generally lead to big heat discharge and a longer period for the heat to build back up in the tropics, leading to multi-year La Ninas

El Niño forecast by late spring, early summer. As of mid-February 2025, weak La Niña conditions persist in the equatorial Pacific, marked by cooler-than-average sea surface temperatures in the Niño 3.4 region, which remain slightly below. While this is not an official El Niño, you would expect these anomalies to appear in the long.

Early warning and early action the coming El Niño Southern Oscillation phenomenon and health. El Niño is the opposite, with warmer-than-average surface water and weaker atmospheric circulation, while ENSO-neutral conditions are close to average. ENSO (El Niño-Southern Oscillation)-neutral simply means the ocean is neither unusually warm (El Niño) nor unusually cool (La Niña).