In 2011, annual snow cover extent over Northern Hemisphere continents (including the Greenland ice sheet) averaged 24.7 million square kilometers, which is 0.3 million square kilometers less than the long-term average.

Since the beginning of 2012, drought conditions have worsened along the eastern seaboard, adding to a dry picture for much of the United States.

The U.S. had its fourth warmest winter on record. NOAA's Deke Arndt recaps the 2011-2012 winter.

The U.S. had its fourth warmest winter on record. In this episode of ClimateCast, NOAA’s Deke Arndt recaps the 2011-2012 winter.
 

During spring 2011, the Northern Great Plains experienced record flooding. This video explains how a La Niña climate pattern helped set the stage for this extreme event.

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