4 天之前 · After just a few months of La Niña conditions, the tropical Pacific is now ENSO-neutral, and forecasters expect neutral to continue through the Northern Hemisphere summer. El Niño …

Oceanic Niño Index (ONI) The ONI is based on SST departures from average in the Niño 3.4 region, and is a principal measure for monitoring, assessing, and predicting ENSO. Defined as …

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 …

The following indices all help characterize ENSO but at different locations and time scales. See the PSL news story on flavors of ENSO. Also see the web page to analyze and compare time …

2022年5月12日 · Current El Niño/Southern Oscillation (ENSO, the entire El Niño and La Niña system) conditions, the forecast for the rest of the year, and some potential impacts are all on …

2025年2月25日 · 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 …

La Niña conditions, which started in September 2020, continued to prevail through mid-May 2022 across the tropical Pacific. While there was a temporary weakening of the oceanic …

2022年9月3日 · La Niña conditions in the tropical Pacific have strengthened as trade winds intensified during mid-July to mid-August 2022, affecting temperature and precipitation …

The chance of El Niño developing during the forecast period is near zero. National Meteorological and Hydrological Services (NMHSs) will closely monitor changes in the state of ENSO over …

2023年6月28日 · La Niña conditions in the tropical Pacific have persisted and strengthened as trade winds intensified during mid-July to mid-August 2022. It is likely that these conditions will …