Well above normal temperatures are forecast to shift from the northern Plains through the Northeast U.S. over the long holiday weekend. A few strong to severe thunderstorm will be possible as well along with a potential for excessive rainfall. A tropical or subtropical depression could form off the Southeast U.S. coast over the weekend while drifting northward to northeastward. Read More >
El Niño/La Niña Information
ENSO-Neutral conditions persist over most of the Pacific Ocean (82% chance through August). ENSO-neutral is still favored to continue into winter 2025-26, though the probability is lower (48% chance of Neutral and 41% chance of La Niña in November-January).
Weekly Update
The Climate Prediction Center (CPC) creates a weekly ENSO summary (with graphics), available in pdf or ppt formats.
Monthly Update - ENSO Diagnostic Discussion
This monthly summary from CPC is also available in pdf and Word formats.
This collaborative blog discusses the latest about El Niño and La Niña.
All About ENSO
An Introduction to the El Niño/Southern Oscillation
The above link provides a basic overview of ENSO (El Niño/Southern Oscillation). Various links to other summaries and tutorials are also provided.
An Explanation of ENSO Indices
Descriptions of various ENSO indices are accompanied by an explanation of how the indices are used to detect/declare an El Niño or La Niña event.
El Niño and La Niña primarily affect the weather during the cold season. What effects does the ENSO phase have on North Texas? Click the Teleconnections link to find out!
Current Data
Various observations, including sea surface temperature animations.
Images of Current Data (from PSL)
Forecasts
Quick Links
Climate Prediction Center (CPC) - El Niño/La Niña Home
Weekly ENSO Update (available in pdf or ppt)
Monthly ENSO Diagnostic Discussion (available in pdf or Word)
Climate.gov - ENSO Information
Physical Sciences Laboratory (PSL) - ENSO Information
Pacific Marine Environmental Laboratory (PMEL) - El Niño Theme Page
International Research Institute for Climate and Society (IRI) - ENSO Resources