El Nino/La Nina Archives

September 8, 2025

By Andrew Hoell, NOAA Physical Sciences Laboratory The El Niño-Southern Oscillation (ENSO) is a recurring phenomenon defined by shifts in tropical...

EOS: Tree rings record history of jet stream-related climate extremes

American Geophysical Union

Hydrology

August 21, 2025

Persistent spatial patterns of summer weather extremes in the northern hemisphere recorded in tree ring growth records provide a thousand-year...

YALE CLIMATE CONNECTIONS: Why winter rains keep skipping the Southwest

Yale Climate Connections

Colorado River Hydrology

August 15, 2025

by Bob Henson, Yale Climate Connections Climate change appears to have driven an ongoing 25-year shortfall in winter rains and...

USGS: Long-term satellite data reveal how climate shapes West Coast shorelines

USGS

Ecosystems

June 25, 2025

By the USGS Coastal and Marine Hazards and Resources Program New research uses decades of satellite data to show...

The growing impact of ENSO on extreme drought and flood events

NOAA Research

Hydrology

April 28, 2025

By NOAA’s Atlantic Oceanographic & Meteorological Laboratory Extreme hydroclimate events, such as droughts, floods, and heavy rainfall, account for a...

NOAA FISHERIES: El Niño yields to upwelling in the California current, renewing productivity of West Coast ecosystem

NOAA Fisheries

Ecosystems

March 10, 2025

Outlook for salmon improves after low returns closed California fisheries. By NOAA Fisheries According to the NOAA California Current Integrated...

NOAA: The weather and climate influences on the January 2025 fires around Los Angeles

NOAA Research

Hydrology Wildfires and watersheds

February 22, 2025

Highlights A trifecta of fire-friendly climate conditions set the stage for the January 2025 fires: back-to-back wet winters that boosted...

SCRIPPS: Atmospheric rivers explain atypical El Niño and La Niña years

Scripps Institution of Oceanography

Hydrology

February 22, 2025

By Alex Fox, Scripps Institution of Oceanography El Niño and La Niña are climate phenomena that are generally associated with...

CU BOULDER: One in two El Niño events could be extreme by mid-century

University of Colorado at Boulder

Hydrology Science

November 18, 2024

By Yvaine Ye, Colorado University at Boulder With the climate pattern known as El Niño in full force from mid-2023...

THE CURRENT: Atmospheric rivers are shifting toward the poles, possibly following a long-term cycle

UC Santa Barbara

Hydrology

November 8, 2024

By Harrison Tasoff, UC Santa Barbara Against the backdrop of global warming, sea level rise and extreme weather, it’s reassuring...

NOAA FISHERIES: California Current Ecosystem shows resilience entering strong El Niño

NOAA Fisheries

Ecosystems

March 11, 2024

The 2023–2024 California Current Ecosystem Status Report shows an abundance of forage fish and a productive system fueled by upwelling....

NOAA FISHERIES: Unsettled Pacific Ocean offers few clear indicators for salmon success in 2024

NOAA Fisheries

Ecosystems

January 12, 2024

By NOAA Fisheries Want to learn how the Pacific Ocean is likely to change and affect salmon survival in the...

CAL MATTERS: As storms arrive in California, reservoirs are in good shape. But the water forecast is murky

Cal Matters

Current Conditions

November 17, 2023

Unlike a year ago, water storage is above average. Whether the year is wet or dry, though, remains uncertain despite...

NEVADA CURRENT: El Niño may bring warmer, wetter winter – and big Colorado River basin snowpacks

Nevada Current

Colorado River

November 9, 2023

by Jeniffer Solis, Nevada Current For the next three months, climate scientists say Nevada can expect warmer winter temperatures and...

AG ALERT: El Niño lifts hopes for more water, stirs fears of flooding

Ag Alert

Current Conditions

October 11, 2023

By Peter Hecht, Ag Alert California reservoirs are brimming at historic levels after a water year described as akin to...