August 1, 2017

Sure it's hot, but is it record hot?  This map shows the hottest summer daytime high temperature recorded at thousands of U.S. stations prior to this summer.  

July 24, 2017

Temperatures in the 90s and little to no rainfall have triggered exceptional drought in parts of the Northern Plains. Crops have been ravaged and fire risk is high in Montana, Wyoming, and parts of North and South Dakota. 

July 11, 2017

Following a plateau in the early 2000s, global concentrations of the powerful greenhouse gas methane have hit new highs in recent years. Chemical fingerprint tests seem to rule out a major role for fossil fuels. With more than half a dozen possible natural and human sources, how will  scientists figure out where it's coming from? 

May 18, 2017

According to NOAA's latest seasonal outlook, a hot summer is more likely than a cool one for most of the United States.  

May 8, 2017

A massive low-pressure system that brought extreme weather to the U.S. Great Plains last week brought a flood emergency to Montréal, Canada, over the weekend. 

March 28, 2017

Following years of exceptional drought, California's southeastern deserts were awash in a superbloom of short-lived but spectacular wildflowers in March 2017.

March 20, 2017

Based on historical climate data from thousands of stations across the United States, these maps show the warmest and coldest daytime high temperatures ever recorded at a given location on March 20—the astronomical first day of spring.

December 15, 2016

A Q & A about the science of detecting the influence of global warming on hurricanes, fires, and other extreme events.

December 13, 2016

A new NOAA-sponsored report shows that unprecedented warming air temperature in 2016 triggered massive declines in sea ice and snow cover across the  Arctic, and brought a record-breaking delay to fall sea ice freeze up. Learn more through our image highlights of the 2016 Arctic Report Card.

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