Last Update: 04/05/2026 at 2:50 PM EST
NOAA Redefines El Nino Labels
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Articles
40
Latest Article
03/24
Active Days
33
Executive Summary
NOAA updated El Nino and La Nina labeling as warming oceans and a prolonged La Nina helped drive a sharp global temperature spike
- A Nature Geoscience study links the recent temperature spike to a three-year La Nina and the shift toward El Nino
- Researchers say Earth's energy imbalance rose in 2022, trapping more heat and warming the planet
- About 23 percent of the imbalance change is tied to the long La Nina pattern
- Slightly more than half of the change comes from greenhouse gas emissions
- NOAA changed its El Nino and La Nina index because tropical waters have warmed enough to alter old classifications
- The new relative index compares tropical temperatures with the rest of Earths tropics
- NOAA expects the updated method to count more La Nina events and fewer El Nino events
Quick Facts
- What: Study and NOAA update El Nino La Nina labels
- Where: Tropical Pacific and global climate system
- Why: Warming oceans changed classifications and helped explain temperature spike
- Who: Japanese researchers NOAA scientists and meteorologists
- When: Study released this month after 2022 to 2025 warming
Coverage Timeline: 33 Days
Featured Article
NOAA forecasts El Nino now
Additional Articles
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NOAA updates El Nino labeling this year in the United States to reflect tropical warming and influence global temperature records.
NOAA forecasts El Nino formation between July and September worldwide, increasing temperatures and shifting rainfall patterns.
Japanese researchers and U.S. meteorologists say a 2020-2023 triple-dip La Nina and revised NOAA indexing contributed to a global temperature jump beginning in 2023.
Scientists attribute higher global temperatures from 2023 to 2025 to extended La Nina and shifting El Nino cycles amid ongoing warming.
Japanese researchers and NOAA scientists report that a prolonged La Nina, followed by an El Nino transition and greenhouse gas forcing, increased Earth's energy imbalance and global temperatures in 2022-2025.
NOAA forecasts El Nino onset by mid 2026 with 62 percent probability, signaling potential global weather shifts.
NOAA says El Nino may form between July and September, with forecast uncertainty and potential for higher global temperatures.
NOAA projects El Nino development between July and September; global temperatures could rise temporarily worldwide.
University of Tokyo researchers and NOAA link a prolonged La Nina and an updated El Nino index to a 2022 energy imbalance increase, raising global temperatures worldwide in 2022-2025.
NOAA projects El Nino development with 50-60 percent likelihood in July through September, with global temperature and rainfall implications.
NOAA reports a 50-60 percent chance of El Nino developing from July to September, potentially lifting global temperatures toward record highs.
NOAA forecasts a likely strong El Niño this summer that could raise global temperatures and alter regional weather through 2027.
NOAA issues El Nino Watch with 62 percent odds of formation June through August, signaling potential global temperature rise and shifts in hurricane season.
NOAA issues El Nino Watch with six month outlook predicting El Nino formation between June and August across the Pacific and Americas.
NOAA forecasts El Nino to emerge this summer globally with regional weather changes through 2027.
NOAA forecasters project El Niño to develop between June and August 2026, influencing global temperatures and regional rainfall through 2027.
NOAA warns of an El Nino watch, raising the likelihood of warmer global temperatures and altered Atlantic and Pacific hurricane seasons, starting in the second half of the year.
NOAA forecasters expect El Nino to emerge by mid 2026, affecting global weather patterns.
Researchers forecast a strong El Nino by late 2026 globally, with temperatures elevated in 2027.
NOAA reports El Nino development with 62 percent odds for June to August.
NOAA forecasts El Nino development between June and August in the Pacific basin, with global temperature and weather pattern implications.
NOAA forecasts El Nino forming between June and August 2026, globally increasing temperatures and shifting regional weather.
Forecast centers warn that a developing El Nino this year could raise global temperatures and intensify extreme weather across the United States and adjacent regions.
Forecasts project a possible El Nino in 2026-2027 while ocean heat acceleration and higher climate sensitivity are linked to faster sea-surface warming.
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World Meteorological Organisation reporting says a potential El Nino developing over New Zealand winter could raise global temperatures and reshape regional extremes.
WMO reports El Nino and La Nina dynamics tied to record 2024 temperatures and near term forecasts through 2026.
World Meteorological Organization provides ENSO outlook for March-May 2026 with rising El Nino risk worldwide.
Meteorologists warn of a potential super El Nino, forecast to emerge in coming months, affecting weather across the United States, Canada, and the Pacific Rim.
WMO warned in 2025 that record excess heat driven by greenhouse gases is rapidly warming oceans and intensifying extreme events, with El Niño expected to increase temperatures into 2026 and 2027.
NOAA forecasts El Nino development with 62 percent odds for June through August, potentially influencing global temperatures and the Atlantic and Pacific hurricane seasons.
CPC forecasters project El Nino formation by summer worldwide, with rising temperatures and impacts on crops and drought risk.
El Nino forecast develops by summer 2026, affecting weather and temperatures worldwide.
NOAA forecast updates and Columbia University assessments in the equatorial Pacific indicate rising odds of El Niño development between June and January.
WMO reports El Nino returns in 2026, with global temperature implications and regional flood risks across Peru, Ecuador, and adjacent South American regions.
WMO and international monitoring centers report El Nino returning in 2026 worldwide, with potential global temperature rise and rainfall pattern shifts.
NOAA forecasts El Nino development in July-September with 50-60 percent probability worldwide, potentially raising global temperatures.
Meteorologists predict El Nino may emerge between June and August 2026, potentially raising global temperatures and altering hurricane activity.
NOAA forecasts El Nino development by June to August with global temperature and hurricane season implications.
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NOAA forecasts El Nino forming in summer and persisting through 2026 across global regions.