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News Release 16-032
Ocean temperatures predict U.S. heat waves 50 days out
Pacific pattern forms in advance of hot days in Eastern U.S.
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![cars in traffic on a highway and a big sun](/news/mmg/media/images/photo2_4_cap lter site_edit3_bd241b24-3cff-42d3-b812-c16e2d113aa4_f.jpg)
Scientists have found a way of predicting an increased chance of a summer heat wave.
Credit: NSF Central Arizona-Phoenix LTER Site
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![map of United States showing different temperatures in 2012](/news/mmg/media/images/June29HeatMap_f.jpg)
June 29, 2012, was the hottest day of the year in the eastern U.S.
Credit: National Weather Service
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![map showing the Pacific region with highlight of area with abnormal temperatures](/news/mmg/media/images/PEPJune29_f.jpg)
Sea-surface temperature anomalies in the mid-latitude Pacific 50 days out from June 29, 2012.
Credit: Courtesy Karen McKinnon, NCAR
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![heat map of the Chicago skyline](/news/mmg/media/images/hot time in the city Dustin Phillips Creative Commons3_f.jpg)
The summer of 2012 was a scorcher. Three heat waves struck the U.S.
Credit: Dustin Phillips/Creative Commons
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![Heat waves affect energy use, farming and other aspects of society.](/news/mmg/media/images/greenhouse to icehouse world_480x300_voa3 nasa_d6e2a9ac-40bb-4287-96ae-1cec15bd1c6a.jpg)
Heat waves affect energy use, farming and other aspects of society.
Credit: NASA
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![Grasses become sere and brown in the baking summer sun.](/news/mmg/media/images/climate_grass3_hkonza prairie lter_a4bfe757-ef57-44ca-ba78-282887beb0a0.jpg)
Grasses become sere and brown in the baking summer sun.
Credit: NSF Konza Prairie LTER Site
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