Two articles discussing the cause of the extreme heat throughout the western U.S.
http://www.accuweather.com/en/weather-news/intense-heat-to-scorch-drought/52247368
http://www.accuweather.com/en/weather-news/extreme-heat-to-bake-west-this/49192020
Two articles discussing the cause of the extreme heat throughout the western U.S.
http://www.accuweather.com/en/weather-news/intense-heat-to-scorch-drought/52247368
http://www.accuweather.com/en/weather-news/extreme-heat-to-bake-west-this/49192020