El Niño and La Niña Years and Intensities - Golden Gate Weather …
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. It is the running 3 …
El Niños & La Niñas from 1986 to the present | El Nino Theme …
Note the major La Niña in 1988-1999, and major El Niños in 1996-1997 and 2015-2016. Years are marked on the left side, with 1986 at the top and the latest year at the bottom; Both panels …
What are El Nino and La Nina? - NOAA's National Ocean Service
Episodes of El Niño and La Niña typically last nine to 12 months, but can sometimes last for years. El Niño and La Niña events occur every two to seven years, on average, but they don’t …
El Nino and La Nina Years: NOAA Physical Sciences Laboratory
Top 24 Strongest El Niño and La Niña Event Years by Season. The values below were calculated using PSL's Extended Multivariate ENSO Index (MEI.ext) for 1895 to 2015.
El Niño and La Niña: Frequently asked questions
Jan 18, 2016 · Both El Niño and La Niña can last more than a year, but it is rare for El Niño events to last longer than a year or so, while it is common for La Niña to last for two years or more. …
El Niño and La Niña - National Oceanic and Atmospheric Administration
Feb 25, 2025 · For more than 30 years, climate researchers have been puzzling about how human-forced climate change affects the El Niño Southern Oscillation (ENSO), the warm …
El Niño / La Niña - World Meteorological Organization
May 6, 2025 · The oscillation between ENSO warm phase (El Niño) to neutral or cold (La Niña) conditions occurs on average every three to five years, while also ranging from two to seven …
What are El Niño and La Niña, and how do they change the weather? - BBC
Apr 16, 2024 · El Niño and La Niña episodes typically occur every two to seven years, and usually last nine to 12 months. They don't necessarily alternate: La Niña events are less common than …
World of Change: El Niño, La Niña, and Rainfall - NASA Earth …
During El Niño years, such as 1997, the southeast receives more rain than average. La Niña is the build up of cool waters in the equatorial eastern Pacific, such as occurred in 1988 and, to a …
El Niño and La Niña - NIWA
El Niño and La Niña are opposite phases of a naturally occurring global climate cycle known as the El Niño Southern Oscillation, or ENSO for short. ENSO influences rainfall, temperature, …