Stubborn drought affected the U.S. Southwest and Four Corners region throughout 2018, stressing water supplies, agriculture, and natural ecosystems.
News & Features
Cities and states across the U.S. already engage in emission mitigation activities. Continuing to reduce emissions will save thousands of lives and billions of dollars.
If the recent weather whiplash has left you wondering how U.S. winters are changing over time, NOAA climate maps tell the story.
A 1°C (1.8°F) increase in average winter air temperature will have a significant impact on Sierra Nevada snowpack, but different parts of the mountain range will respond differently.
The tropical Pacific Ocean is sending out signals, but the atmosphere has yet to respond. Our blogger gives you the scoop.
Unlike the rest of us, Arctic sea ice is younger and thinner than it was in the mid-1980s.
September 2018 was the second-highest on record, and all five years since 2014 have been warmer than any prior records.
As oceans warm, harmful algal blooms move northward into regions where populations have little or no prior exposure.
Reindeer and caribou abundance has declined 56 percent over the past two decades.
From declining reindeer populations to a younger, thinner ice pack, here are four image-based stories from the 2018 Arctic Report Card.