ENSO | NOAA Climate.gov

November 2020: The year is ending as it began, on a hot streak

December 15, 2020

November 2020 was the second-warmest November on record, which increases 2020's chance of becoming the warmest year on record to over 50%.

October 2020: “Only” the fourth-warmest October on record

November 16, 2020

October 2020 was the fourth warmest October on record dating back to 1880, which makes it the lowest-ranked month so far in 2020.

September 2020 global temperature anomaly

September 2020: Another record-setting month for global heat

October 16, 2020

September 2020 was the hottest September on record for the globe, continuing a sweltering year.

Precipitation patterns during every La Niña winter since 1950

October 12, 2017

What were precipitation amounts during winter like across the U.S. during every La Niña on record? We've got the answer right here.

Heavy summer rains flood Peru

March 10, 2017

Warm ocean temperatures off the coast of Peru helped to create flooding rains across the country in late winter 2017.

Scientists link toxic algal blooms along U.S. West Coast to warm waters in the Pacific

January 23, 2017

New research links warm ocean conditions in the North Pacific to the elevated levels of a natural toxin in shellfish along the U.S. West Coast.

September 2016 tropical Pacific update

October 13, 2016

Cooler-than-normal sea surface temperatures in the central-eastern tropical Pacific ocean have continued and deepened during September as compared to August. Sea surface temperature is one criteria that climate experts use to monitor and predict La Niña—the cool phase of the ENSO climate pattern.