Severe Weather Expected for Portions of the Midwest; Excessive Heat for the Central and Eastern U.S.

Severe storms capable of producing severe winds, large hail, tornadoes and heavy rainfall are expected through this evening across portions of the Midwest. A Moderate Risk (level 4 of 5) of Severe Storms and Excessive Rainfall is in effect. Excessive heat will continue to impact the Central and Eastern U.S. this week. Read More >

El Niño/La Niña Information

La Niña Watch

ENSO-neutral conditions are now in place.
A transition to La Niña may occur this summer.

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