With multiple sea surface temperature datasets come questions. What are they all for?

Warmer-than-average waters in the tropical Pacific are expected to reach their peak soon. How has El Niño affected global weather so far this year?

How have past El Niños affected U.S. winter temperature and precipitation, and what are NOAA's predictions for this strong El Niño winter of 2015-16? Guest blogger Mike Halpert gives us the scoop.

The peak of El Niño is expected to arrive soon after peak pumpkin spice latte season. What are some of the winter weather effects seen during past El Niños?

NCEI's Deke Arndt blogs about how El Niño—like an erratic bartender—doesn't always bring the country the seasonal climate we'd expect.

Many mid-Atlantic and West Coast communities could see the highest number of nuisance flooding days on record through April due to rising sea levels and more frequent storm surge, compounded by El...

El Niño is a global phenomenon. Guest blogger Dr. Andrew Watkins shines some light on El Niño's impact across the world in Australia.

Guest blogger Ken Takahashi assesses the prospects for this El Niño to be an extreme one in the eastern tropical Pacific, like the 1982 and 1997 events were.

ENSO forecasters are predicting this El Niño will be a strong one. What does that mean?

Part science expert, part ringmaster, Jessica Blunden shares the challenges and the value of putting together the State of the Climate report every year.