El Niño & La Niña (El Niño-Southern Oscillation) - NOAA …
Nov 14, 2024 · El Niño and La Niña are the warm and cool phases of a natural climate pattern across the tropical Pacific known as the El Niño-Southern Oscillation, or “ENSO” for short. The pattern shifts back and forth irregularly every two to seven years, bringing predictable changes in ocean temperature and disrupting the normal wind and rainfall ...
What are El Nino and La Nina? - NOAA's National Ocean Service
El Niño and La Niña are two opposing climate patterns that break these normal conditions. Scientists call these phenomena the El Niño-Southern Oscillation (ENSO) cycle. El Niño and La Niña can both have global impacts on weather, wildfires , ecosystems , and economies.
January 2025 update: La Niña is here | NOAA Climate.gov
Jan 9, 2025 · To be categorized as a La Niña event in our historical record, the three-month-average Niño-3.4 Index (the Oceanic Niño Index) needs to stay at least 0.5 °C below average for at least five consecutive, overlapping seasons. Current odds are 60% that the March–May Oceanic Niño Index will be neutral, which would make this event last fewer ...
EL NIÑO/SOUTHERN OSCILLATION (ENSO) - Climate Prediction …
Jan 9, 2025 · Synopsis: La Niña conditions are present and are expected to persist through February-April 2025 (59% chance), with a transition to ENSO-neutral likely during March-May 2025 (60% chance). La Niña conditions emerged in December 2024 and were reflected in below-average sea surface temperatures (SSTs) across the central and east-central ...
La Niña conditions are expected to persist through February-April 2025 (59% chance), with a transition to ENSO-neutral likely during March-May 2025 (60% chance).
El Niño and La Niña - National Oceanic and Atmospheric Administration
Jul 1, 2015 · What is El Niño? What is La Niña? An El Niño condition occurs when surface water in the equatorial Pacific becomes warmer than average and east winds blow weaker than normal. The opposite condition is called La Niña. During this phase of ENSO, the water is cooler than normal and the east winds are stronger.
El Niño/La Niña Home - Climate Prediction Center
Jan 26, 2005 · U.S. El Niño State Seasonal Precipitation & Temperature Impacts Expert Assessment Current Diagnostic Discussion Monitoring & Data Weekly UpdateFigures) Outreach ENSO Evolution, Status & Prediction Presentation PowerPoint PDF The El Niño/La Niña Cycle (Tutorial) FAQ SST Niño Regions Global La Niña Impacts Global El Niño Impacts
El Niño and La Niña: Frequently asked questions - NOAA …
Jan 18, 2016 · El Niño and La Niña are opposite phases of a natural climate pattern across the tropical Pacific Ocean that swings back and forth every 3-7 years on average. Together, they are called ENSO (pronounced “en-so”), which is short for E l N iño- S outhern O scillation.
What is La Niña? | El Nino Theme Page - A comprehensive Resource
The La Niña story. La Niña is characterized by unusually cold ocean temperatures in the Equatorial Pacific, compared to El Niño, which is characterized by unusually warm ocean temperatures in the Equatorial Pacific.
El Niño and La Niña Explained | Ocean Today - National Oceanic …
These strong trade winds are a signature of what is called La Niña, unusually cold conditions in the tropical Pacific that displace the Jet Stream northward. La Niña can lead to drought in the southern US and cooler temperatures, heavy rains and flooding in the Pacific Northwest.