Dangerous heat wave in western U.S.

Associated Press
Runners take advantage of lower temperatures at sunrise, Thursday, June 27, 2013 in Mesa, Ariz. Excessive heat warnings will continue for much of the Desert Southwest as building high pressure triggers major warming in eastern California, Nevada, and Arizona. Dangerously hot temperatures are expected across the Arizona deserts throughout the week with a high of 118 by Friday. (AP Photo/Matt York)

View gallery

13 photos

Excessive heat warnings will continue for much of the Desert Southwest as building high pressure triggers major warming in eastern California, Nevada, and Arizona.

View Comments