Heavy Rainfall and Severe Thunderstorms Possible in the Mid-Atlantic and Northeast Today; Dangerous Heat in the Southwest

Scattered severe thunderstorms containing the potential for damaging wind gusts and excessive rainfall are possible from the Mid-Atlantic to southern New England today, with additional thunderstorms and heavy rain possible across parts of the Plains and Middle Mississippi Valley. Heat and humidity remain along the East Coast and Interior Northwest, while dangerous heat builds into the Southwest. 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.

ENSO Blog

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.

Teleconnections

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