Above-average sea surface temperatures, a natural cycle of increased hurricane activity, and a fading La Nina have influenced the 2011 Atlantic hurricane outlook.

Deep snow that fell across the Great Plains and the Northeast in late January and early February is the latest installment in the second very wintry winter in a row for the eastern U.S.

More than half of the United States experienced heat, drought, or flooding during 2011, demonstrating the power and momentum of climate extremes.

 Researchers at NOAA’s National Climatic Data Center collaborate with tropical cyclone centers and scientific agencies around the world to assemble and maintain the International Best Track Archive for Climate Stewardship (IBTrACS), an inventory of tropical cyclones.

WMO Statement on the Status of the Global Climate in 2013 Report Cover

WMO Releases Annual Status of the Global Climate Report

The dramatic impact of climate variability and climate change continued to be felt all over the world throughout 2013.The World Meteorological Organization statement on the status of the global climate in 2013 provides a snapshot of global and regional trends in weather and climate over the past year and highlights some of the year’s most significant extreme events.

NAS booklet cover picture

Climate Change: Evidence & Causes

A team of climate scientists from The National Academy of Sciences and The Royal Society have produced a new report for decision makers, policy makers, educators, and other individuals seeking authoritative information on climate science.

This video describes the impact of extreme heat on Philadelphia in the summer of 2011 and how the city is adapting to new expectations about its weather. It uses this example to introduce the new national climate normals, released by NOAA's National Climatic Data Center (NCDC) that summer.

In this video, a spokesperson for the National Climactic Data Center describes the methods of using satellites (originally designed for observing changes in the weather) to study changes in climate from decade to decade. The video clearly illustrates the value of satellite data and begins to address connections between weather and climate.

What is an extreme event? NOAA scientists explore how single events or trends in extreme weather relate to climate change.

U.S. Climate Normals

Discover easy access to 30-year Climate Normals for temperature and precipitation from stations across the country. This tool generates graphs for montlhy temperature and precipitation Climate Normals, and provides tabular data for hourly, daily, monthly, seasonal, and annual periods.

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